12799739 has 4 divisors (see below), whose sum is σ = 12881424. Its totient is φ = 12718056.

The previous prime is 12799733. The next prime is 12799741. The reversal of 12799739 is 93799721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93799721 = 727 ⋅129023.

It is a cyclic number.

It is not a de Polignac number, because 12799739 - 2⁴ = 12799723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12799693 and 12799702.

It is not an unprimeable number, because it can be changed into a prime (12799733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40607 + ... + 40920.

It is an arithmetic number, because the mean of its divisors is an integer number (3220356).

Almost surely, 2^12799739 is an apocalyptic number.

12799739 is a deficient number, since it is larger than the sum of its proper divisors (81685).

12799739 is an equidigital number, since it uses as much as digits as its factorization.

12799739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81684.

The product of its digits is 214326, while the sum is 47.

The square root of 12799739 is about 3577.6722879548. The cubic root of 12799739 is about 233.9198291116.

The spelling of 12799739 in words is "twelve million, seven hundred ninety-nine thousand, seven hundred thirty-nine".