13044399 has 4 divisors (see below), whose sum is σ = 17392536. Its totient is φ = 8696264.

The previous prime is 13044377. The next prime is 13044407. The reversal of 13044399 is 99344031.

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 13044399 - 2⁹ = 13043887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13044329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2174064 + ... + 2174069.

It is an arithmetic number, because the mean of its divisors is an integer number (4348134).

Almost surely, 2^13044399 is an apocalyptic number.

13044399 is a deficient number, since it is larger than the sum of its proper divisors (4348137).

13044399 is an equidigital number, since it uses as much as digits as its factorization.

13044399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4348136.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 13044399 is about 3611.7030608842. The cubic root of 13044399 is about 235.4008489890.

The spelling of 13044399 in words is "thirteen million, forty-four thousand, three hundred ninety-nine".