3925631 has 2 divisors, whose sum is σ = 3925632. Its totient is φ = 3925630.

The previous prime is 3925613. The next prime is 3925637. The reversal of 3925631 is 1365293.

Together with previous prime (3925613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3925631 - 2¹⁴ = 3909247 is a prime.

It is a super-2 number, since 2×3925631² = 30821157496322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 3925594 and 3925603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3925637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1962815 + 1962816.

It is an arithmetic number, because the mean of its divisors is an integer number (1962816).

Almost surely, 2^3925631 is an apocalyptic number.

3925631 is a deficient number, since it is larger than the sum of its proper divisors (1).

3925631 is an equidigital number, since it uses as much as digits as its factorization.

3925631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 29.

The square root of 3925631 is about 1981.3205192497. The cubic root of 3925631 is about 157.7501659712.

The spelling of 3925631 in words is "three million, nine hundred twenty-five thousand, six hundred thirty-one".