3977477617 has 2 divisors, whose sum is σ = 3977477618. Its totient is φ = 3977477616.

The previous prime is 3977477593. The next prime is 3977477627. The reversal of 3977477617 is 7167747793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3976059136 + 1418481 = 63056^2 + 1191^2 .

It is a cyclic number.

It is not a de Polignac number, because 3977477617 - 2¹⁹ = 3976953329 is a prime.

It is not a weakly prime, because it can be changed into another prime (3977477627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1988738808 + 1988738809.

It is an arithmetic number, because the mean of its divisors is an integer number (1988738809).

Almost surely, 2^3977477617 is an apocalyptic number.

It is an amenable number.

3977477617 is a deficient number, since it is larger than the sum of its proper divisors (1).

3977477617 is an equidigital number, since it uses as much as digits as its factorization.

3977477617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10890936, while the sum is 58.

The square root of 3977477617 is about 63067.2467846821. The cubic root of 3977477617 is about 1584.4161047225.

The spelling of 3977477617 in words is "three billion, nine hundred seventy-seven million, four hundred seventy-seven thousand, six hundred seventeen".