12880919 has 2 divisors, whose sum is σ = 12880920. Its totient is φ = 12880918.

The previous prime is 12880913. The next prime is 12880927. The reversal of 12880919 is 91908821.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12880919 is a prime.

It is a super-2 number, since 2×12880919² = 331836148569122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12880913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6440459 + 6440460.

It is an arithmetic number, because the mean of its divisors is an integer number (6440460).

Almost surely, 2^12880919 is an apocalyptic number.

12880919 is a deficient number, since it is larger than the sum of its proper divisors (1).

12880919 is an equidigital number, since it uses as much as digits as its factorization.

12880919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 12880919 is about 3588.9997213708. Note that the first 3 decimals coincide. The cubic root of 12880919 is about 234.4133185112.

The spelling of 12880919 in words is "twelve million, eight hundred eighty thousand, nine hundred nineteen".