97988790 has 16 divisors (see below), whose sum is σ = 235173168. Its totient is φ = 26130336.

The previous prime is 97988789. The next prime is 97988801. The reversal of 97988790 is 9788979.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 97988790.

It is a congruent number.

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, 1633117 + ... + 1633176.

It is an arithmetic number, because the mean of its divisors is an integer number (14698323).

Almost surely, 2^97988790 is an apocalyptic number.

97988790 is an abundant number, since it is smaller than the sum of its proper divisors (137184378).

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

97988790 is a wasteful number, since it uses less digits than its factorization.

97988790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3266303.

The product of its (nonzero) digits is 2286144, while the sum is 57.

The square root of 97988790 is about 9898.9287299182. The cubic root of 97988790 is about 461.0260492869.

The spelling of 97988790 in words is "ninety-seven million, nine hundred eighty-eight thousand, seven hundred ninety".