3904631 has 2 divisors, whose sum is σ = 3904632. Its totient is φ = 3904630.

The previous prime is 3904603. The next prime is 3904639. The reversal of 3904631 is 1364093.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3904631 is a prime.

It is a super-2 number, since 2×3904631² = 30492286492322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3904631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3904639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1952315 + 1952316.

It is an arithmetic number, because the mean of its divisors is an integer number (1952316).

Almost surely, 2^3904631 is an apocalyptic number.

3904631 is a deficient number, since it is larger than the sum of its proper divisors (1).

3904631 is an equidigital number, since it uses as much as digits as its factorization.

3904631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 3904631 is about 1976.0139169550. The cubic root of 3904631 is about 157.4683702336.

The spelling of 3904631 in words is "three million, nine hundred four thousand, six hundred thirty-one".