12979769 has 4 divisors (see below), whose sum is σ = 14159760. Its totient is φ = 11799780.

The previous prime is 12979727. The next prime is 12979777. The reversal of 12979769 is 96797921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12979769 is a prime.

It is a super-2 number, since 2×12979769² = 336948806586722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12979069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 589979 + ... + 590000.

It is an arithmetic number, because the mean of its divisors is an integer number (3539940).

Almost surely, 2^12979769 is an apocalyptic number.

It is an amenable number.

12979769 is a deficient number, since it is larger than the sum of its proper divisors (1179991).

12979769 is a wasteful number, since it uses less digits than its factorization.

12979769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179990.

The product of its digits is 428652, while the sum is 50.

The square root of 12979769 is about 3602.7446481814. The cubic root of 12979769 is about 235.0114314644.

The spelling of 12979769 in words is "twelve million, nine hundred seventy-nine thousand, seven hundred sixty-nine".