13387899 has 8 divisors (see below), whose sum is σ = 20400640. Its totient is φ = 7650216.

The previous prime is 13387897. The next prime is 13387919. The reversal of 13387899 is 99878331.

13387899 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13387899 - 2¹ = 13387897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13387897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318739 + ... + 318780.

It is an arithmetic number, because the mean of its divisors is an integer number (2550080).

Almost surely, 2^13387899 is an apocalyptic number.

13387899 is a deficient number, since it is larger than the sum of its proper divisors (7012741).

13387899 is an equidigital number, since it uses as much as digits as its factorization.

13387899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637529.

The product of its digits is 326592, while the sum is 48.

The square root of 13387899 is about 3658.9477995730. The cubic root of 13387899 is about 237.4492537932.

The spelling of 13387899 in words is "thirteen million, three hundred eighty-seven thousand, eight hundred ninety-nine".