97999880 has 64 divisors (see below), whose sum is σ = 244010880. Its totient is φ = 35123200.

The previous prime is 97999879. The next prime is 97999919. The reversal of 97999880 is 8899979.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 29672 + ... + 32808.

It is an arithmetic number, because the mean of its divisors is an integer number (3812670).

Almost surely, 2^97999880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97999880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122005440).

97999880 is an abundant number, since it is smaller than the sum of its proper divisors (146011000).

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

97999880 is a wasteful number, since it uses less digits than its factorization.

97999880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3230 (or 3226 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 59.

The square root of 97999880 is about 9899.4888756945. The cubic root of 97999880 is about 461.0434410247.

The spelling of 97999880 in words is "ninety-seven million, nine hundred ninety-nine thousand, eight hundred eighty".