12879739 has 8 divisors (see below), whose sum is σ = 13847040. Its totient is φ = 11941416.

The previous prime is 12879733. The next prime is 12879749. The reversal of 12879739 is 93797821.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12879739 - 2⁵ = 12879707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12879733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6319 + ... + 8104.

It is an arithmetic number, because the mean of its divisors is an integer number (1730880).

Almost surely, 2^12879739 is an apocalyptic number.

12879739 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12879739 is a deficient number, since it is larger than the sum of its proper divisors (967301).

12879739 is a wasteful number, since it uses less digits than its factorization.

12879739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14489.

The product of its digits is 190512, while the sum is 46.

The square root of 12879739 is about 3588.8353263977. The cubic root of 12879739 is about 234.4061602185.

It can be divided in two parts, 1287 and 9739, that added together give a triangular number (11026 = T₁₄₈).

The spelling of 12879739 in words is "twelve million, eight hundred seventy-nine thousand, seven hundred thirty-nine".