12905739 has 36 divisors (see below), whose sum is σ = 23431408. Its totient is φ = 6700320.

The previous prime is 12905723. The next prime is 12905749. The reversal of 12905739 is 93750921.

12905739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12905739 - 2⁴ = 12905723 is a prime.

It is a super-2 number, since 2×12905739² = 333116198272242, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (12905749) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6777 + ... + 8469.

Almost surely, 2^12905739 is an apocalyptic number.

12905739 is a deficient number, since it is larger than the sum of its proper divisors (10525669).

12905739 is a wasteful number, since it uses less digits than its factorization.

12905739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728 (or 1714 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 12905739 is about 3592.4558452401. The cubic root of 12905739 is about 234.5637841109.

The spelling of 12905739 in words is "twelve million, nine hundred five thousand, seven hundred thirty-nine".