13768399 has 4 divisors (see below), whose sum is σ = 13808200. Its totient is φ = 13728600.

The previous prime is 13768387. The next prime is 13768411. The reversal of 13768399 is 99386731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99386731 = 587 ⋅169313.

It is an interprime number because it is at equal distance from previous prime (13768387) and next prime (13768411).

It is a cyclic number.

It is not a de Polignac number, because 13768399 - 2²³ = 5379791 is a prime.

It is a super-2 number, since 2×13768399² = 379137622046402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13768379) 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 in 3 ways as a sum of consecutive naturals, for example, 19377 + ... + 20074.

It is an arithmetic number, because the mean of its divisors is an integer number (3452050).

Almost surely, 2^13768399 is an apocalyptic number.

13768399 is a deficient number, since it is larger than the sum of its proper divisors (39801).

13768399 is an equidigital number, since it uses as much as digits as its factorization.

13768399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39800.

The product of its digits is 244944, while the sum is 46.

The square root of 13768399 is about 3710.5793348209. The cubic root of 13768399 is about 239.6778026007.

The spelling of 13768399 in words is "thirteen million, seven hundred sixty-eight thousand, three hundred ninety-nine".