12513739 has 8 divisors (see below), whose sum is σ = 14763008. Its totient is φ = 10379880.

The previous prime is 12513727. The next prime is 12513749. The reversal of 12513739 is 93731521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12513739 - 2⁹ = 12513227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12513739.

It is not an unprimeable number, because it can be changed into a prime (12513749) 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, 28617 + ... + 29050.

It is an arithmetic number, because the mean of its divisors is an integer number (1845376).

Almost surely, 2^12513739 is an apocalyptic number.

12513739 is a deficient number, since it is larger than the sum of its proper divisors (2249269).

12513739 is an equidigital number, since it uses as much as digits as its factorization.

12513739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57705.

The product of its digits is 5670, while the sum is 31.

The square root of 12513739 is about 3537.4763603450. The cubic root of 12513739 is about 232.1644382664.

The spelling of 12513739 in words is "twelve million, five hundred thirteen thousand, seven hundred thirty-nine".