97910904 has 128 divisors (see below), whose sum is σ = 304496640. Its totient is φ = 25546752.

The previous prime is 97910899. The next prime is 97910909. The reversal of 97910904 is 40901979.

It is an interprime number because it is at equal distance from previous prime (97910899) and next prime (97910909).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97910909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 277192 + ... + 277544.

It is an arithmetic number, because the mean of its divisors is an integer number (2378880).

Almost surely, 2^97910904 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 97910904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152248320).

97910904 is an abundant number, since it is smaller than the sum of its proper divisors (206585736).

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

97910904 is a wasteful number, since it uses less digits than its factorization.

97910904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509 (or 505 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 97910904 is about 9894.9938857990. The cubic root of 97910904 is about 460.9038686691.

The spelling of 97910904 in words is "ninety-seven million, nine hundred ten thousand, nine hundred four".