13579399 has 4 divisors (see below), whose sum is σ = 13587120. Its totient is φ = 13571680.

The previous prime is 13579343. The next prime is 13579403. The reversal of 13579399 is 99397531.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13579399 - 2¹⁹ = 13055111 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 (13579309) 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, 207 + ... + 5215.

It is an arithmetic number, because the mean of its divisors is an integer number (3396780).

Almost surely, 2^13579399 is an apocalyptic number.

13579399 is a deficient number, since it is larger than the sum of its proper divisors (7721).

13579399 is an equidigital number, since it uses as much as digits as its factorization.

13579399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7720.

The product of its digits is 229635, while the sum is 46.

The square root of 13579399 is about 3685.0236091510. The cubic root of 13579399 is about 238.5760532272.

The spelling of 13579399 in words is "thirteen million, five hundred seventy-nine thousand, three hundred ninety-nine".