3976731 has 12 divisors (see below), whose sum is σ = 6266520. Its totient is φ = 2410080.

The previous prime is 3976703. The next prime is 3976733. The reversal of 3976731 is 1376793.

It is not a de Polignac number, because 3976731 - 2⁶ = 3976667 is a prime.

It is a super-2 number, since 2×3976731² = 31628778892722, which contains 22 as substring.

3976731 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3976733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19986 + ... + 20183.

It is an arithmetic number, because the mean of its divisors is an integer number (522210).

Almost surely, 2^3976731 is an apocalyptic number.

3976731 is a deficient number, since it is larger than the sum of its proper divisors (2289789).

3976731 is a wasteful number, since it uses less digits than its factorization.

3976731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40186 (or 40183 counting only the distinct ones).

The product of its digits is 23814, while the sum is 36.

The square root of 3976731 is about 1994.1742652035. The cubic root of 3976731 is about 158.4316960982.

The spelling of 3976731 in words is "three million, nine hundred seventy-six thousand, seven hundred thirty-one".