3972431 has 8 divisors (see below), whose sum is σ = 4124064. Its totient is φ = 3823200.

The previous prime is 3972427. The next prime is 3972439. The reversal of 3972431 is 1342793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3972431 - 2² = 3972427 is a prime.

It is a super-2 number, since 2×3972431² = 31560416099522, which contains 22 as substring.

It is an Ulam number.

It is a d-powerful number, because it can be written as 3⁵ + 9³ + 7⁷ + 2²¹ + 4¹⁰ + 3⁷ + 1 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3972394 and 3972403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3972439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3206 + ... + 4268.

It is an arithmetic number, because the mean of its divisors is an integer number (515508).

Almost surely, 2^3972431 is an apocalyptic number.

3972431 is a deficient number, since it is larger than the sum of its proper divisors (151633).

3972431 is a wasteful number, since it uses less digits than its factorization.

3972431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201.

The product of its digits is 4536, while the sum is 29.

The square root of 3972431 is about 1993.0958331199. The cubic root of 3972431 is about 158.3745719607.

The spelling of 3972431 in words is "three million, nine hundred seventy-two thousand, four hundred thirty-one".