977942 has 24 divisors (see below), whose sum is σ = 1809864. Its totient is φ = 393792.

The previous prime is 977927. The next prime is 977971. The reversal of 977942 is 249779.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 977896 and 977905.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1373 + ... + 1959.

It is an arithmetic number, because the mean of its divisors is an integer number (75411).

2⁹⁷⁷⁹⁴² is an apocalyptic number.

977942 is a deficient number, since it is larger than the sum of its proper divisors (831922).

977942 is a wasteful number, since it uses less digits than its factorization.

977942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620 (or 613 counting only the distinct ones).

The product of its digits is 31752, while the sum is 38.

The square root of 977942 is about 988.9095004094. The cubic root of 977942 is about 99.2592599227.

The spelling of 977942 in words is "nine hundred seventy-seven thousand, nine hundred forty-two".