3947264775 has 72 divisors (see below), whose sum is σ = 7197825024. Its totient is φ = 2067508800.

The previous prime is 3947264773. The next prime is 3947264819. The reversal of 3947264775 is 5774627493.

It is not a de Polignac number, because 3947264775 - 2¹ = 3947264773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3947264773) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3056880 + ... + 3058170.

It is an arithmetic number, because the mean of its divisors is an integer number (99969792).

Almost surely, 2^3947264775 is an apocalyptic number.

3947264775 is a deficient number, since it is larger than the sum of its proper divisors (3250560249).

3947264775 is a wasteful number, since it uses less digits than its factorization.

3947264775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541 (or 1533 counting only the distinct ones).

The product of its digits is 8890560, while the sum is 54.

The square root of 3947264775 is about 62827.2613998096. The cubic root of 3947264775 is about 1580.3941727387.

The spelling of 3947264775 in words is "three billion, nine hundred forty-seven million, two hundred sixty-four thousand, seven hundred seventy-five".