Number 7990 seven thousand nine hundred ninety Properties of the number 7990 Factorization 2 * 5 * 17 * 47 Divisors 1, 2, 5, 10, 17, 34, 47, 85, 94, 170, 235, 470, 799, 1598, 3995, 7990 Count of divisors 16 Sum of divisors 15552 Previous integer 7989 Next integer 7991 Is prime? NO Previous prime 7963 Next prime 7993 7990th prime 81689 Is a Fibonacci number? NO Is a Bell number? NO Is a Catalan number? NO Is a factorial? NO Is a regular number? NO Is a perfect number? NO Polygonal number (s < 11)? NO Binary 1111100110110 Octal 17466 Duodecimal 475a Hexadecimal 1f36 Square 63840100 Square root 89.386799920346 Natural logarithm 8.9859460387603 Decimal logarithm 3.902546779314 Sine -0.80154934374995 Cosine -0.59792863247551 Tangent 1.34054350338