97599979 has 4 divisors (see below), whose sum is σ = 102736840. Its totient is φ = 92463120.

The previous prime is 97599961. The next prime is 97599989. The reversal of 97599979 is 97999579.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 97599979 - 2⁵ = 97599947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 97599979.

It is not an unprimeable number, because it can be changed into a prime (97599919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2568402 + ... + 2568439.

It is an arithmetic number, because the mean of its divisors is an integer number (25684210).

Almost surely, 2^97599979 is an apocalyptic number.

97599979 is a deficient number, since it is larger than the sum of its proper divisors (5136861).

97599979 is a wasteful number, since it uses less digits than its factorization.

97599979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5136860.

The product of its digits is 14467005, while the sum is 64.

The square root of 97599979 is about 9879.2701653513. The cubic root of 97599979 is about 460.4154705710.

The spelling of 97599979 in words is "ninety-seven million, five hundred ninety-nine thousand, nine hundred seventy-nine".