97199979 has 8 divisors (see below), whose sum is σ = 129879360. Its totient is φ = 64660296.

The previous prime is 97199951. The next prime is 97199983. The reversal of 97199979 is 97999179.

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

It is not a de Polignac number, because 97199979 - 2¹⁵ = 97167211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97199929) 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, 33289 + ... + 36090.

It is an arithmetic number, because the mean of its divisors is an integer number (16234920).

Almost surely, 2^97199979 is an apocalyptic number.

97199979 is a deficient number, since it is larger than the sum of its proper divisors (32679381).

97199979 is a wasteful number, since it uses less digits than its factorization.

97199979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69849.

The product of its digits is 2893401, while the sum is 60.

The square root of 97199979 is about 9859.0049700768. The cubic root of 97199979 is about 459.7856263240.

The spelling of 97199979 in words is "ninety-seven million, one hundred ninety-nine thousand, nine hundred seventy-nine".