997440924 has 24 divisors (see below), whose sum is σ = 2327987200. Its totient is φ = 332391024.

The previous prime is 997440923. The next prime is 997440937. The reversal of 997440924 is 429044799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997440923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47877 + ... + 65475.

Almost surely, 2^997440924 is an apocalyptic number.

It is an amenable number.

997440924 is an abundant number, since it is smaller than the sum of its proper divisors (1330546276).

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

997440924 is a wasteful number, since it uses less digits than its factorization.

997440924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22329 (or 22327 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 997440924 is about 31582.2881374988. The cubic root of 997440924 is about 999.1462459782.

The spelling of 997440924 in words is "nine hundred ninety-seven million, four hundred forty thousand, nine hundred twenty-four".