3972647266 has 32 divisors (see below), whose sum is σ = 6966720000. Its totient is φ = 1698280416.

The previous prime is 3972647219. The next prime is 3972647279. The reversal of 3972647266 is 6627462793.

It is a happy number.

3972647266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273495 + ... + 287653.

It is an arithmetic number, because the mean of its divisors is an integer number (217710000).

Almost surely, 2^3972647266 is an apocalyptic number.

3972647266 is a deficient number, since it is larger than the sum of its proper divisors (2994072734).

3972647266 is a wasteful number, since it uses less digits than its factorization.

3972647266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14591 (or 14577 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 52.

The square root of 3972647266 is about 63028.9399085849. The cubic root of 3972647266 is about 1583.7744597018.

The spelling of 3972647266 in words is "three billion, nine hundred seventy-two million, six hundred forty-seven thousand, two hundred sixty-six".