3995972 has 12 divisors (see below), whose sum is σ = 7044240. Its totient is φ = 1983336.

The previous prime is 3995941. The next prime is 3995977. The reversal of 3995972 is 2795993.

It is not an unprimeable number, because it can be changed into a prime (3995977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3038 + ... + 4149.

It is an arithmetic number, because the mean of its divisors is an integer number (587020).

Almost surely, 2^3995972 is an apocalyptic number.

It is an amenable number.

3995972 is a deficient number, since it is larger than the sum of its proper divisors (3048268).

3995972 is a wasteful number, since it uses less digits than its factorization.

3995972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7330 (or 7328 counting only the distinct ones).

The product of its digits is 153090, while the sum is 44.

The square root of 3995972 is about 1998.9927463600. The cubic root of 3995972 is about 158.6868035392.

The spelling of 3995972 in words is "three million, nine hundred ninety-five thousand, nine hundred seventy-two".