977628447 has 10 divisors (see below), whose sum is σ = 1460408048. Its totient is φ = 651752244.

The previous prime is 977628439. The next prime is 977628497. The reversal of 977628447 is 744826779.

977628447 is a `hidden beast` number, since 9 + 7 + 7 + 628 + 4 + 4 + 7 = 666.

It is not a de Polignac number, because 977628447 - 2³ = 977628439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 977628393 and 977628402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977628497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6034663 + ... + 6034824.

Almost surely, 2^977628447 is an apocalyptic number.

977628447 is a deficient number, since it is larger than the sum of its proper divisors (482779601).

977628447 is a wasteful number, since it uses less digits than its factorization.

977628447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12069499 (or 12069490 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 54.

The square root of 977628447 is about 31267.0505004869. The cubic root of 977628447 is about 992.4865044366.

The spelling of 977628447 in words is "nine hundred seventy-seven million, six hundred twenty-eight thousand, four hundred forty-seven".