13385399 has 4 divisors (see below), whose sum is σ = 13392720. Its totient is φ = 13378080.

The previous prime is 13385387. The next prime is 13385401. The reversal of 13385399 is 99358331.

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, and also an emirpimes, since its reverse is a distinct semiprime: 99358331 = 4243 ⋅23417.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13385399 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 (13385369) 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, 1679 + ... + 5439.

It is an arithmetic number, because the mean of its divisors is an integer number (3348180).

Almost surely, 2^13385399 is an apocalyptic number.

13385399 is a deficient number, since it is larger than the sum of its proper divisors (7321).

13385399 is an equidigital number, since it uses as much as digits as its factorization.

13385399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7320.

The product of its digits is 87480, while the sum is 41.

The square root of 13385399 is about 3658.6061553548. The cubic root of 13385399 is about 237.4344727812.

The spelling of 13385399 in words is "thirteen million, three hundred eighty-five thousand, three hundred ninety-nine".