12779338 has 16 divisors (see below), whose sum is σ = 22520736. Its totient is φ = 5361840.

The previous prime is 12779321. The next prime is 12779339. The reversal of 12779338 is 83397721.

It is a super-2 number, since 2×12779338² = 326622959436488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12779338.

It is not an unprimeable number, because it can be changed into a prime (12779339) 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, 22056 + ... + 22627.

It is an arithmetic number, because the mean of its divisors is an integer number (1407546).

Almost surely, 2^12779338 is an apocalyptic number.

12779338 is a deficient number, since it is larger than the sum of its proper divisors (9741398).

12779338 is a wasteful number, since it uses less digits than its factorization.

12779338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44709.

The product of its digits is 63504, while the sum is 40.

The square root of 12779338 is about 3574.8199954683. The cubic root of 12779338 is about 233.7954844905.

The spelling of 12779338 in words is "twelve million, seven hundred seventy-nine thousand, three hundred thirty-eight".