13299247 has 4 divisors (see below), whose sum is σ = 14322280. Its totient is φ = 12276216.

The previous prime is 13299239. The next prime is 13299263. The reversal of 13299247 is 74299231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13299247 - 2³ = 13299239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13299227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 511497 + ... + 511522.

It is an arithmetic number, because the mean of its divisors is an integer number (3580570).

Almost surely, 2^13299247 is an apocalyptic number.

13299247 is a deficient number, since it is larger than the sum of its proper divisors (1023033).

13299247 is a wasteful number, since it uses less digits than its factorization.

13299247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023032.

The product of its digits is 27216, while the sum is 37.

The square root of 13299247 is about 3646.8132664012. The cubic root of 13299247 is about 236.9239787748.

The spelling of 13299247 in words is "thirteen million, two hundred ninety-nine thousand, two hundred forty-seven".