12920079 has 8 divisors (see below), whose sum is σ = 17484160. Its totient is φ = 8484696.

The previous prime is 12920071. The next prime is 12920093. The reversal of 12920079 is 97002921.

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

It is not a de Polignac number, because 12920079 - 2³ = 12920071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12920071) 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 7 ways as a sum of consecutive naturals, for example, 31939 + ... + 32340.

It is an arithmetic number, because the mean of its divisors is an integer number (2185520).

Almost surely, 2^12920079 is an apocalyptic number.

12920079 is a deficient number, since it is larger than the sum of its proper divisors (4564081).

12920079 is an equidigital number, since it uses as much as digits as its factorization.

12920079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64349.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 12920079 is about 3594.4511402994. The cubic root of 12920079 is about 234.6506291859.

The spelling of 12920079 in words is "twelve million, nine hundred twenty thousand, seventy-nine".