3904131 has 16 divisors (see below), whose sum is σ = 6490368. Its totient is φ = 2028000.

The previous prime is 3904127. The next prime is 3904141. The reversal of 3904131 is 1314093.

3904131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3904131 - 2² = 3904127 is a prime.

It is a super-2 number, since 2×3904131² = 30484477730322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 3904098 and 3904107.

It is not an unprimeable number, because it can be changed into a prime (3904111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8220 + ... + 8681.

It is an arithmetic number, because the mean of its divisors is an integer number (405648).

Almost surely, 2^3904131 is an apocalyptic number.

3904131 is a deficient number, since it is larger than the sum of its proper divisors (2586237).

3904131 is a wasteful number, since it uses less digits than its factorization.

3904131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16922.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 3904131 is about 1975.8873955770. The cubic root of 3904131 is about 157.4616485104.

The spelling of 3904131 in words is "three million, nine hundred four thousand, one hundred thirty-one".