3967251992 has 32 divisors (see below), whose sum is σ = 8168601600. Its totient is φ = 1791348000.

The previous prime is 3967251973. The next prime is 3967252007. The reversal of 3967251992 is 2991527693.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135992 + ... + 162567.

It is an arithmetic number, because the mean of its divisors is an integer number (255268800).

Almost surely, 2^3967251992 is an apocalyptic number.

It is an amenable number.

3967251992 is an abundant number, since it is smaller than the sum of its proper divisors (4201349608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3967251992 is a wasteful number, since it uses less digits than its factorization.

3967251992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298727 (or 298723 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 53.

The square root of 3967251992 is about 62986.1253928196. The cubic root of 3967251992 is about 1583.0571572916.

The spelling of 3967251992 in words is "three billion, nine hundred sixty-seven million, two hundred fifty-one thousand, nine hundred ninety-two".