997924 has 12 divisors (see below), whose sum is σ = 1822464. Its totient is φ = 477224.

The previous prime is 997897. The next prime is 997933. The reversal of 997924 is 429799.

997924 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 5332 + ... + 5515.

It is an arithmetic number, because the mean of its divisors is an integer number (151872).

2⁹⁹⁷⁹²⁴ is an apocalyptic number.

It is an amenable number.

997924 is a deficient number, since it is larger than the sum of its proper divisors (824540).

997924 is a wasteful number, since it uses less digits than its factorization.

997924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10874 (or 10872 counting only the distinct ones).

The product of its digits is 40824, while the sum is 40.

The square root of 997924 is about 998.9614607181. The cubic root of 997924 is about 99.9307520583.

The spelling of 997924 in words is "nine hundred ninety-seven thousand, nine hundred twenty-four".