97539904 has 56 divisors (see below), whose sum is σ = 241328448. Its totient is φ = 38000640.

The previous prime is 97539889. The next prime is 97539907. The reversal of 97539904 is 40993579.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97539907) 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 7 ways as a sum of consecutive naturals, for example, 4969 + ... + 14824.

Almost surely, 2^97539904 is an apocalyptic number.

It is an amenable number.

97539904 is an abundant number, since it is smaller than the sum of its proper divisors (143788544).

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

97539904 is a wasteful number, since it uses less digits than its factorization.

97539904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19823 (or 19813 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 46.

The square root of 97539904 is about 9876.2292399478. The cubic root of 97539904 is about 460.3209857954.

The spelling of 97539904 in words is "ninety-seven million, five hundred thirty-nine thousand, nine hundred four".