12739388 has 24 divisors (see below), whose sum is σ = 23353344. Its totient is φ = 6073200.

The previous prime is 12739387. The next prime is 12739393. The reversal of 12739388 is 88393721.

It is a super-2 number, since 2×12739388² = 324584013229088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12739387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8081 + ... + 9527.

It is an arithmetic number, because the mean of its divisors is an integer number (973056).

Almost surely, 2^12739388 is an apocalyptic number.

It is an amenable number.

12739388 is a deficient number, since it is larger than the sum of its proper divisors (10613956).

12739388 is a wasteful number, since it uses less digits than its factorization.

12739388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553 (or 1551 counting only the distinct ones).

The product of its digits is 72576, while the sum is 41.

The square root of 12739388 is about 3569.2279277177. The cubic root of 12739388 is about 233.5516043721.

The spelling of 12739388 in words is "twelve million, seven hundred thirty-nine thousand, three hundred eighty-eight".