10639931 has 2 divisors, whose sum is σ = 10639932. Its totient is φ = 10639930.

The previous prime is 10639921. The next prime is 10639949. The reversal of 10639931 is 13993601.

10639931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10639931 - 2¹⁰ = 10638907 is a prime.

It is a super-2 number, since 2×10639931² = 226416263369522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10639921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5319965 + 5319966.

It is an arithmetic number, because the mean of its divisors is an integer number (5319966).

Almost surely, 2^10639931 is an apocalyptic number.

10639931 is a deficient number, since it is larger than the sum of its proper divisors (1).

10639931 is an equidigital number, since it uses as much as digits as its factorization.

10639931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 10639931 is about 3261.8907093893. The cubic root of 10639931 is about 219.9444143314.

The spelling of 10639931 in words is "ten million, six hundred thirty-nine thousand, nine hundred thirty-one".