12999929 has 2 divisors, whose sum is σ = 12999930. Its totient is φ = 12999928.

The previous prime is 12999919. The next prime is 12999937. The reversal of 12999929 is 92999921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6864400 + 6135529 = 2620^2 + 2477^2 .

It is a cyclic number.

It is not a de Polignac number, because 12999929 - 2⁸ = 12999673 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12999919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6499964 + 6499965.

It is an arithmetic number, because the mean of its divisors is an integer number (6499965).

Almost surely, 2^12999929 is an apocalyptic number.

It is an amenable number.

12999929 is a deficient number, since it is larger than the sum of its proper divisors (1).

12999929 is an equidigital number, since it uses as much as digits as its factorization.

12999929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 236196, while the sum is 50.

The square root of 12999929 is about 3605.5414295221. The cubic root of 12999929 is about 235.1330407078.

The spelling of 12999929 in words is "twelve million, nine hundred ninety-nine thousand, nine hundred twenty-nine".