13299987 has 8 divisors (see below), whose sum is σ = 17890704. Its totient is φ = 8787968.

The previous prime is 13299973. The next prime is 13299989. The reversal of 13299987 is 78999231.

13299987 is digitally balanced in base 2, because in such base 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 a cyclic number.

It is not a de Polignac number, because 13299987 - 2⁴ = 13299971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13299989) 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, 19278 + ... + 19955.

It is an arithmetic number, because the mean of its divisors is an integer number (2236338).

Almost surely, 2^13299987 is an apocalyptic number.

13299987 is a deficient number, since it is larger than the sum of its proper divisors (4590717).

13299987 is a wasteful number, since it uses less digits than its factorization.

13299987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39349.

The product of its digits is 244944, while the sum is 48.

The square root of 13299987 is about 3646.9147234340. The cubic root of 13299987 is about 236.9283730209.

The spelling of 13299987 in words is "thirteen million, two hundred ninety-nine thousand, nine hundred eighty-seven".