13299943 has 16 divisors (see below), whose sum is σ = 14586880. Its totient is φ = 12083904.

The previous prime is 13299931. The next prime is 13299947. The reversal of 13299943 is 34999231.

It is a cyclic number.

It is not a de Polignac number, because 13299943 - 2⁹ = 13299431 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 13299896 and 13299905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13299947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59530 + ... + 59752.

It is an arithmetic number, because the mean of its divisors is an integer number (911680).

Almost surely, 2^13299943 is an apocalyptic number.

13299943 is a deficient number, since it is larger than the sum of its proper divisors (1286937).

13299943 is a wasteful number, since it uses less digits than its factorization.

13299943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358.

The product of its digits is 52488, while the sum is 40.

The square root of 13299943 is about 3646.9086909326. The cubic root of 13299943 is about 236.9281117460.

Subtracting from 13299943 its sum of digits (40), we obtain a triangular number (13299903 = T₅₁₅₇).

The spelling of 13299943 in words is "thirteen million, two hundred ninety-nine thousand, nine hundred forty-three".