977949 has 36 divisors (see below), whose sum is σ = 1743456. Its totient is φ = 517104.

The previous prime is 977927. The next prime is 977971. The reversal of 977949 is 949779.

It is an interprime number because it is at equal distance from previous prime (977927) and next prime (977971).

It is not a de Polignac number, because 977949 - 2⁸ = 977693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977149) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 22722 + ... + 22764.

2⁹⁷⁷⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

977949 is a deficient number, since it is larger than the sum of its proper divisors (765507).

977949 is a wasteful number, since it uses less digits than its factorization.

977949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 72 counting only the distinct ones).

The product of its digits is 142884, while the sum is 45.

The square root of 977949 is about 988.9130396552. The cubic root of 977949 is about 99.2594967511.

The spelling of 977949 in words is "nine hundred seventy-seven thousand, nine hundred forty-nine".