12939192 has 48 divisors (see below), whose sum is σ = 40051440. Its totient is φ = 3696768.

The previous prime is 12939167. The next prime is 12939197. The reversal of 12939192 is 29193921.

It is a happy number.

It is a super-2 number, since 2×12939192² = 334845379225728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12939197) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12333 + ... + 13340.

It is an arithmetic number, because the mean of its divisors is an integer number (834405).

Almost surely, 2^12939192 is an apocalyptic number.

12939192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12939192 is an abundant number, since it is smaller than the sum of its proper divisors (27112248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12939192 is a wasteful number, since it uses less digits than its factorization.

12939192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25692 (or 25685 counting only the distinct ones).

The product of its digits is 8748, while the sum is 36.

The square root of 12939192 is about 3597.1088390539. The cubic root of 12939192 is about 234.7662803817.

It can be divided in two parts, 1293919 and 2, that added together give a palindrome (1293921).

The spelling of 12939192 in words is "twelve million, nine hundred thirty-nine thousand, one hundred ninety-two".