79990959 has 16 divisors (see below), whose sum is σ = 109890144. Its totient is φ = 51724800.

The previous prime is 79990957. The next prime is 79990979. The reversal of 79990959 is 95909997.

It is not a de Polignac number, because 79990959 - 2¹ = 79990957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79990899 and 79990908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79990951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20467 + ... + 24059.

It is an arithmetic number, because the mean of its divisors is an integer number (6868134).

Almost surely, 2^79990959 is an apocalyptic number.

79990959 is a deficient number, since it is larger than the sum of its proper divisors (29899185).

79990959 is a wasteful number, since it uses less digits than its factorization.

79990959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3818.

The product of its (nonzero) digits is 2066715, while the sum is 57.

The square root of 79990959 is about 8943.7664884544. The cubic root of 79990959 is about 430.8707055248.

The spelling of 79990959 in words is "seventy-nine million, nine hundred ninety thousand, nine hundred fifty-nine".