997400884 has 12 divisors (see below), whose sum is σ = 1749807108. Its totient is φ = 497456000.

The previous prime is 997400849. The next prime is 997400909. The reversal of 997400884 is 488004799.

997400884 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 654336400 + 343064484 = 25580^2 + 18522^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309307 + ... + 312514.

It is an arithmetic number, because the mean of its divisors is an integer number (145817259).

Almost surely, 2^997400884 is an apocalyptic number.

It is an amenable number.

997400884 is a deficient number, since it is larger than the sum of its proper divisors (752406224).

997400884 is a wasteful number, since it uses less digits than its factorization.

997400884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622226 (or 622224 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 997400884 is about 31581.6542315313. The cubic root of 997400884 is about 999.1328763138.

The spelling of 997400884 in words is "nine hundred ninety-seven million, four hundred thousand, eight hundred eighty-four".