97431444 has 48 divisors (see below), whose sum is σ = 275567040. Its totient is φ = 29524320.

The previous prime is 97431431. The next prime is 97431463. The reversal of 97431444 is 44413479.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 97431399 and 97431408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39819 + ... + 42194.

It is an arithmetic number, because the mean of its divisors is an integer number (5740980).

Almost surely, 2^97431444 is an apocalyptic number.

It is an amenable number.

97431444 is an abundant number, since it is smaller than the sum of its proper divisors (178135596).

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

97431444 is a wasteful number, since it uses less digits than its factorization.

97431444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82037 (or 82029 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 97431444 is about 9870.7367506180. The cubic root of 97431444 is about 460.1503037504.

The spelling of 97431444 in words is "ninety-seven million, four hundred thirty-one thousand, four hundred forty-four".