3975831 has 8 divisors (see below), whose sum is σ = 5890160. Its totient is φ = 2650536.

The previous prime is 3975827. The next prime is 3975857. The reversal of 3975831 is 1385793.

It is not a de Polignac number, because 3975831 - 2² = 3975827 is a prime.

It is a super-2 number, since 2×3975831² = 31614464281122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3975031) 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 7 ways as a sum of consecutive naturals, for example, 73600 + ... + 73653.

It is an arithmetic number, because the mean of its divisors is an integer number (736270).

Almost surely, 2^3975831 is an apocalyptic number.

3975831 is a deficient number, since it is larger than the sum of its proper divisors (1914329).

3975831 is a wasteful number, since it uses less digits than its factorization.

3975831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147262 (or 147256 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 3975831 is about 1993.9485951248. The cubic root of 3975831 is about 158.4197432920.

The spelling of 3975831 in words is "three million, nine hundred seventy-five thousand, eight hundred thirty-one".