11997929 has 2 divisors, whose sum is σ = 11997930. Its totient is φ = 11997928.

The previous prime is 11997919. The next prime is 11997943. The reversal of 11997929 is 92979911.

It is a happy number.

11997929 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9909904 + 2088025 = 3148^2 + 1445^2 .

It is a cyclic number.

It is not a de Polignac number, because 11997929 - 2⁴ = 11997913 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11997919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5998964 + 5998965.

It is an arithmetic number, because the mean of its divisors is an integer number (5998965).

Almost surely, 2^11997929 is an apocalyptic number.

It is an amenable number.

11997929 is a deficient number, since it is larger than the sum of its proper divisors (1).

11997929 is an equidigital number, since it uses as much as digits as its factorization.

11997929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 91854, while the sum is 47.

The square root of 11997929 is about 3463.8026791375. The cubic root of 11997929 is about 228.9296771796.

The spelling of 11997929 in words is "eleven million, nine hundred ninety-seven thousand, nine hundred twenty-nine".