13099239 has 20 divisors (see below), whose sum is σ = 19906920. Its totient is φ = 8581680.

The previous prime is 13099223. The next prime is 13099253. The reversal of 13099239 is 93299031.

13099239 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13099239 - 2⁴ = 13099223 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13099279) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3409 + ... + 6149.

It is an arithmetic number, because the mean of its divisors is an integer number (995346).

Almost surely, 2^13099239 is an apocalyptic number.

13099239 is a deficient number, since it is larger than the sum of its proper divisors (6807681).

13099239 is an equidigital number, since it uses as much as digits as its factorization.

13099239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2812 (or 2803 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 36.

The square root of 13099239 is about 3619.2870844961. The cubic root of 13099239 is about 235.7302709348.

The spelling of 13099239 in words is "thirteen million, ninety-nine thousand, two hundred thirty-nine".