977427 has 20 divisors (see below), whose sum is σ = 1594296. Its totient is φ = 591840.

The previous prime is 977413. The next prime is 977437. The reversal of 977427 is 724779.

It is not a de Polignac number, because 977427 - 2⁴ = 977411 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 977391 and 977400.

It is not an unprimeable number, because it can be changed into a prime (977407) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 343 + ... + 1439.

2⁹⁷⁷⁴²⁷ is an apocalyptic number.

977427 is a deficient number, since it is larger than the sum of its proper divisors (616869).

977427 is a wasteful number, since it uses less digits than its factorization.

977427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120 (or 1111 counting only the distinct ones).

The product of its digits is 24696, while the sum is 36.

The square root of 977427 is about 988.6490782881. The cubic root of 977427 is about 99.2418330219.

It can be divided in two parts, 9774 and 27, that added together give a square (9801 = 99²).

The spelling of 977427 in words is "nine hundred seventy-seven thousand, four hundred twenty-seven".