13788999 has 12 divisors (see below), whose sum is σ = 22762896. Its totient is φ = 7879392.

The previous prime is 13788991. The next prime is 13789019. The reversal of 13788999 is 99988731.

It is not a de Polignac number, because 13788999 - 2³ = 13788991 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13788991) 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 11 ways as a sum of consecutive naturals, for example, 109374 + ... + 109499.

It is an arithmetic number, because the mean of its divisors is an integer number (1896908).

Almost surely, 2^13788999 is an apocalyptic number.

13788999 is a deficient number, since it is larger than the sum of its proper divisors (8973897).

13788999 is a wasteful number, since it uses less digits than its factorization.

13788999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218886 (or 218883 counting only the distinct ones).

The product of its digits is 979776, while the sum is 54.

The square root of 13788999 is about 3713.3541441667. The cubic root of 13788999 is about 239.7972767285.

The spelling of 13788999 in words is "thirteen million, seven hundred eighty-eight thousand, nine hundred ninety-nine".