12853991 has 2 divisors, whose sum is σ = 12853992. Its totient is φ = 12853990.

The previous prime is 12853979. The next prime is 12854021. The reversal of 12853991 is 19935821.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12853991 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12843991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6426995 + 6426996.

It is an arithmetic number, because the mean of its divisors is an integer number (6426996).

Almost surely, 2^12853991 is an apocalyptic number.

12853991 is a deficient number, since it is larger than the sum of its proper divisors (1).

12853991 is an equidigital number, since it uses as much as digits as its factorization.

12853991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 38.

The square root of 12853991 is about 3585.2462955842. The cubic root of 12853991 is about 234.2498548733.

The spelling of 12853991 in words is "twelve million, eight hundred fifty-three thousand, nine hundred ninety-one".