13826639 has 2 divisors, whose sum is σ = 13826640. Its totient is φ = 13826638.

The previous prime is 13826629. The next prime is 13826653. The reversal of 13826639 is 93662831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13826639 - 2⁸ = 13826383 is a prime.

It is a Chen prime.

It is equal to p₈₉₉₅₅₂ and since 13826639 and 899552 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13826629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6913319 + 6913320.

It is an arithmetic number, because the mean of its divisors is an integer number (6913320).

Almost surely, 2^13826639 is an apocalyptic number.

13826639 is a deficient number, since it is larger than the sum of its proper divisors (1).

13826639 is an equidigital number, since it uses as much as digits as its factorization.

13826639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 38.

The square root of 13826639 is about 3718.4188844185. The cubic root of 13826639 is about 240.0152710190.

The spelling of 13826639 in words is "thirteen million, eight hundred twenty-six thousand, six hundred thirty-nine".