3871992 has 16 divisors (see below), whose sum is σ = 9680040. Its totient is φ = 1290656.

The previous prime is 3871969. The next prime is 3872017. The reversal of 3871992 is 2991783.

It is a self number, because there is not a number n which added to its sum of digits gives 3871992.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80643 + ... + 80690.

Almost surely, 2^3871992 is an apocalyptic number.

It is an amenable number.

3871992 is an abundant number, since it is smaller than the sum of its proper divisors (5808048).

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

3871992 is a wasteful number, since it uses less digits than its factorization.

3871992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161342 (or 161338 counting only the distinct ones).

The product of its digits is 27216, while the sum is 39.

The square root of 3871992 is about 1967.7377874097. The cubic root of 3871992 is about 157.0283800644.

The spelling of 3871992 in words is "three million, eight hundred seventy-one thousand, nine hundred ninety-two".