130977639 has 24 divisors (see below), whose sum is σ = 215731152. Its totient is φ = 75859200.

The previous prime is 130977629. The next prime is 130977647. The reversal of 130977639 is 936779031.

130977639 is a `hidden beast` number, since 1 + 3 + 0 + 9 + 7 + 7 + 639 = 666.

It is not a de Polignac number, because 130977639 - 2²¹ = 128880487 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130977594 and 130977603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130977629) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30937 + ... + 34914.

It is an arithmetic number, because the mean of its divisors is an integer number (8988798).

Almost surely, 2^130977639 is an apocalyptic number.

130977639 is a deficient number, since it is larger than the sum of its proper divisors (84753513).

130977639 is a wasteful number, since it uses less digits than its factorization.

130977639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65887 (or 65884 counting only the distinct ones).

The product of its (nonzero) digits is 214326, while the sum is 45.

The square root of 130977639 is about 11444.5462557499. The cubic root of 130977639 is about 507.8464089685.

It can be divided in two parts, 13097 and 7639, that added together give a 4-th power (20736 = 12⁴).

The spelling of 130977639 in words is "one hundred thirty million, nine hundred seventy-seven thousand, six hundred thirty-nine".