12911967 has 10 divisors (see below), whose sum is σ = 19288368. Its totient is φ = 8607924.

The previous prime is 12911957. The next prime is 12911999. The reversal of 12911967 is 76911921.

12911967 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12911967 - 2⁸ = 12911711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12911917) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 79623 + ... + 79784.

Almost surely, 2^12911967 is an apocalyptic number.

12911967 is a deficient number, since it is larger than the sum of its proper divisors (6376401).

12911967 is an equidigital number, since it uses as much as digits as its factorization.

12911967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159419 (or 159410 counting only the distinct ones).

The product of its digits is 6804, while the sum is 36.

The square root of 12911967 is about 3593.3225571885. The cubic root of 12911967 is about 234.6015096612.

The spelling of 12911967 in words is "twelve million, nine hundred eleven thousand, nine hundred sixty-seven".