3972297 has 32 divisors (see below), whose sum is σ = 6386688. Its totient is φ = 2149056.

The previous prime is 3972263. The next prime is 3972301. The reversal of 3972297 is 7922793.

It is not a de Polignac number, because 3972297 - 2⁶ = 3972233 is a prime.

Its product of digits (47628) is a multiple of the sum of its prime divisors (189).

It is not an unprimeable number, because it can be changed into a prime (3972697) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47818 + ... + 47900.

It is an arithmetic number, because the mean of its divisors is an integer number (199584).

Almost surely, 2^3972297 is an apocalyptic number.

It is an amenable number.

3972297 is a deficient number, since it is larger than the sum of its proper divisors (2414391).

3972297 is a wasteful number, since it uses less digits than its factorization.

3972297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189.

The product of its digits is 47628, while the sum is 39.

The square root of 3972297 is about 1993.0622167910. The cubic root of 3972297 is about 158.3727911509.

The spelling of 3972297 in words is "three million, nine hundred seventy-two thousand, two hundred ninety-seven".