13992637 has 2 divisors, whose sum is σ = 13992638. Its totient is φ = 13992636.

The previous prime is 13992631. The next prime is 13992731. The reversal of 13992637 is 73629931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13883076 + 109561 = 3726^2 + 331^2 .

It is an emirp because it is prime and its reverse (73629931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13992637 - 2⁷ = 13992509 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13992637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13992631) 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, 6996318 + 6996319.

It is an arithmetic number, because the mean of its divisors is an integer number (6996319).

Almost surely, 2^13992637 is an apocalyptic number.

It is an amenable number.

13992637 is a deficient number, since it is larger than the sum of its proper divisors (1).

13992637 is an equidigital number, since it uses as much as digits as its factorization.

13992637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236, while the sum is 40.

The square root of 13992637 is about 3740.6733351096. The cubic root of 13992637 is about 240.9719669189.

The spelling of 13992637 in words is "thirteen million, nine hundred ninety-two thousand, six hundred thirty-seven".