12940779 has 8 divisors (see below), whose sum is σ = 17462592. Its totient is φ = 8523080.

The previous prime is 12940777. The next prime is 12940813. The reversal of 12940779 is 97704921.

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 12940779 - 2¹ = 12940777 is a prime.

It is a super-2 number, since 2×12940779² = 334927522253682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12940777) 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, 25737 + ... + 26234.

It is an arithmetic number, because the mean of its divisors is an integer number (2182824).

Almost surely, 2^12940779 is an apocalyptic number.

12940779 is a deficient number, since it is larger than the sum of its proper divisors (4521813).

12940779 is an equidigital number, since it uses as much as digits as its factorization.

12940779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52057.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 12940779 is about 3597.3294261160. The cubic root of 12940779 is about 234.7758780664.

The spelling of 12940779 in words is "twelve million, nine hundred forty thousand, seven hundred seventy-nine".