12639910 has 16 divisors (see below), whose sum is σ = 22966416. Its totient is φ = 5008288.

The previous prime is 12639901. The next prime is 12639919. The reversal of 12639910 is 1993621.

12639910 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12639901) and next prime (12639919).

It is a super-3 number, since 3×12639910³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12639919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4837 + ... + 6976.

It is an arithmetic number, because the mean of its divisors is an integer number (1435401).

Almost surely, 2^12639910 is an apocalyptic number.

12639910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12639910 is a deficient number, since it is larger than the sum of its proper divisors (10326506).

12639910 is a wasteful number, since it uses less digits than its factorization.

12639910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11927.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 12639910 is about 3555.2651096648. The cubic root of 12639910 is about 232.9421040308.

The spelling of 12639910 in words is "twelve million, six hundred thirty-nine thousand, nine hundred ten".