12499739 has 8 divisors (see below), whose sum is σ = 15037440. Its totient is φ = 10150056.

The previous prime is 12499733. The next prime is 12499757. The reversal of 12499739 is 93799421.

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

It is not a de Polignac number, because 12499739 - 2¹⁶ = 12434203 is a prime.

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 12499739.

It is not an unprimeable number, because it can be changed into a prime (12499733) 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, 46859 + ... + 47124.

It is an arithmetic number, because the mean of its divisors is an integer number (1879680).

Almost surely, 2^12499739 is an apocalyptic number.

12499739 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12499739 is a deficient number, since it is larger than the sum of its proper divisors (2537701).

12499739 is an equidigital number, since it uses as much as digits as its factorization.

12499739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94009.

The product of its digits is 122472, while the sum is 44.

The square root of 12499739 is about 3535.4969947661. The cubic root of 12499739 is about 232.0778263965.

The spelling of 12499739 in words is "twelve million, four hundred ninety-nine thousand, seven hundred thirty-nine".