13807399 has 2 divisors, whose sum is σ = 13807400. Its totient is φ = 13807398.

The previous prime is 13807397. The next prime is 13807403. The reversal of 13807399 is 99370831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13807399 - 2¹ = 13807397 is a prime.

Together with 13807397, it forms a pair of twin primes.

It is equal to p₈₉₈₃₉₃ and since 13807399 and 898393 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 (13807397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6903699 + 6903700.

It is an arithmetic number, because the mean of its divisors is an integer number (6903700).

Almost surely, 2^13807399 is an apocalyptic number.

13807399 is a deficient number, since it is larger than the sum of its proper divisors (1).

13807399 is an equidigital number, since it uses as much as digits as its factorization.

13807399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 13807399 is about 3715.8308626739. The cubic root of 13807399 is about 239.9038909160.

The spelling of 13807399 in words is "thirteen million, eight hundred seven thousand, three hundred ninety-nine".