9791239899 has 8 divisors (see below), whose sum is σ = 14919984640. Its totient is φ = 5594994216.

The previous prime is 9791239873. The next prime is 9791239949. The reversal of 9791239899 is 9989321979.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9791239899 - 2⁵ = 9791239867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9791239819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233124739 + ... + 233124780.

It is an arithmetic number, because the mean of its divisors is an integer number (1864998080).

Almost surely, 2^9791239899 is an apocalyptic number.

9791239899 is a deficient number, since it is larger than the sum of its proper divisors (5128744741).

9791239899 is a wasteful number, since it uses less digits than its factorization.

9791239899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466249529.

The product of its digits is 19840464, while the sum is 66.

The square root of 9791239899 is about 98950.6942825567. The cubic root of 9791239899 is about 2139.3371385010.

The spelling of 9791239899 in words is "nine billion, seven hundred ninety-one million, two hundred thirty-nine thousand, eight hundred ninety-nine".