97889988 has 24 divisors (see below), whose sum is σ = 261040192. Its totient is φ = 27968544.

The previous prime is 97889977. The next prime is 97889999. The reversal of 97889988 is 88998879.

It is an interprime number because it is at equal distance from previous prime (97889977) and next prime (97889999).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 582595 + ... + 582762.

Almost surely, 2^97889988 is an apocalyptic number.

It is an amenable number.

97889988 is an abundant number, since it is smaller than the sum of its proper divisors (163150204).

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

97889988 is a wasteful number, since it uses less digits than its factorization.

97889988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165371 (or 1165369 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 66.

The square root of 97889988 is about 9893.9369312726. The cubic root of 97889988 is about 460.8710464758.

The spelling of 97889988 in words is "ninety-seven million, eight hundred eighty-nine thousand, nine hundred eighty-eight".