13148239 has 12 divisors (see below), whose sum is σ = 14523096. Its totient is φ = 11832912.

The previous prime is 13148231. The next prime is 13148257. The reversal of 13148239 is 93284131.

It is not a de Polignac number, because 13148239 - 2³ = 13148231 is a prime.

It is a super-2 number, since 2×13148239² = 345752377602242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13148239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13148231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23764 + ... + 24310.

It is an arithmetic number, because the mean of its divisors is an integer number (1210258).

Almost surely, 2^13148239 is an apocalyptic number.

13148239 is a deficient number, since it is larger than the sum of its proper divisors (1374857).

13148239 is an equidigital number, since it uses as much as digits as its factorization.

13148239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646 (or 603 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 13148239 is about 3626.0500548117. The cubic root of 13148239 is about 236.0238353308.

The spelling of 13148239 in words is "thirteen million, one hundred forty-eight thousand, two hundred thirty-nine".