13629919 has 2 divisors, whose sum is σ = 13629920. Its totient is φ = 13629918.

The previous prime is 13629911. The next prime is 13629929. The reversal of 13629919 is 91992631.

It is a weak prime.

It is an emirp because it is prime and its reverse (91992631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13629919 - 2³ = 13629911 is a prime.

It is a super-2 number, since 2×13629919² = 371549383893122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13629911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6814959 + 6814960.

It is an arithmetic number, because the mean of its divisors is an integer number (6814960).

Almost surely, 2^13629919 is an apocalyptic number.

13629919 is a deficient number, since it is larger than the sum of its proper divisors (1).

13629919 is an equidigital number, since it uses as much as digits as its factorization.

13629919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26244, while the sum is 40.

The square root of 13629919 is about 3691.8720183668. The cubic root of 13629919 is about 238.8715485360.

The spelling of 13629919 in words is "thirteen million, six hundred twenty-nine thousand, nine hundred nineteen".