997749504 has 54 divisors (see below), whose sum is σ = 2876764436. Its totient is φ = 332582400.

The previous prime is 997749479. The next prime is 997749517. The reversal of 997749504 is 405947799.

997749504 is a `hidden beast` number, since 9 + 97 + 7 + 49 + 504 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 214222 + ... + 218829.

Almost surely, 2^997749504 is an apocalyptic number.

It is an amenable number.

997749504 is an abundant number, since it is smaller than the sum of its proper divisors (1879014932).

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

997749504 is a wasteful number, since it uses less digits than its factorization.

997749504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433073 (or 433056 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The square root of 997749504 is about 31587.1730928869. The cubic root of 997749504 is about 999.2492712140.

It can be divided in two parts, 99774 and 9504, that added together give a triangular number (109278 = T₄₆₇).

The spelling of 997749504 in words is "nine hundred ninety-seven million, seven hundred forty-nine thousand, five hundred four".