97309644 has 24 divisors (see below), whose sum is σ = 230905920. Its totient is φ = 31886544.

The previous prime is 97309637. The next prime is 97309669. The reversal of 97309644 is 44690379.

It is a junction number, because it is equal to n+sod(n) for n = 97309596 and 97309605.

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, 68014 + ... + 69429.

It is an arithmetic number, because the mean of its divisors is an integer number (9621080).

Almost surely, 2^97309644 is an apocalyptic number.

It is an amenable number.

97309644 is an abundant number, since it is smaller than the sum of its proper divisors (133596276).

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

97309644 is a wasteful number, since it uses less digits than its factorization.

97309644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137509 (or 137507 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 97309644 is about 9864.5650689729. The cubic root of 97309644 is about 459.9584776635.

The spelling of 97309644 in words is "ninety-seven million, three hundred nine thousand, six hundred forty-four".