13273987 has 2 divisors, whose sum is σ = 13273988. Its totient is φ = 13273986.

The previous prime is 13273979. The next prime is 13274011. The reversal of 13273987 is 78937231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13273987 - 2³ = 13273979 is a prime.

It is equal to p₈₆₅₈₉₄ and since 13273987 and 865894 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (13273937) 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, 6636993 + 6636994.

It is an arithmetic number, because the mean of its divisors is an integer number (6636994).

Almost surely, 2^13273987 is an apocalyptic number.

13273987 is a deficient number, since it is larger than the sum of its proper divisors (1).

13273987 is an equidigital number, since it uses as much as digits as its factorization.

13273987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 40.

The square root of 13273987 is about 3643.3483226285. The cubic root of 13273987 is about 236.7738827398.

The spelling of 13273987 in words is "thirteen million, two hundred seventy-three thousand, nine hundred eighty-seven".