97879818 has 16 divisors (see below), whose sum is σ = 196174080. Its totient is φ = 32557536.

The previous prime is 97879813. The next prime is 97879823. The reversal of 97879818 is 81897879.

It is an interprime number because it is at equal distance from previous prime (97879813) and next prime (97879823).

It is not an unprimeable number, because it can be changed into a prime (97879813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14155 + ... + 19902.

It is an arithmetic number, because the mean of its divisors is an integer number (12260880).

Almost surely, 2^97879818 is an apocalyptic number.

97879818 is an abundant number, since it is smaller than the sum of its proper divisors (98294262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97879818 is a wasteful number, since it uses less digits than its factorization.

97879818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34541.

The product of its digits is 2032128, while the sum is 57.

The square root of 97879818 is about 9893.4229667997. The cubic root of 97879818 is about 460.8550856304.

The spelling of 97879818 in words is "ninety-seven million, eight hundred seventy-nine thousand, eight hundred eighteen".