997400 has 24 divisors (see below), whose sum is σ = 2319420. Its totient is φ = 398880.

The previous prime is 997391. The next prime is 997427. The reversal of 997400 is 4799.

It is a nialpdrome in base 10.

It is a zygodrome in base 2.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 997400.

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, 2294 + ... + 2693.

2⁹⁹⁷⁴⁰⁰ is an apocalyptic number.

It is an amenable number.

997400 is an abundant number, since it is smaller than the sum of its proper divisors (1322020).

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

997400 is a wasteful number, since it uses less digits than its factorization.

997400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5003 (or 4994 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 997400 is about 998.6991538997. The cubic root of 997400 is about 99.9132581135.

The spelling of 997400 in words is "nine hundred ninety-seven thousand, four hundred".