13385739 has 4 divisors (see below), whose sum is σ = 17847656. Its totient is φ = 8923824.

The previous prime is 13385731. The next prime is 13385759. The reversal of 13385739 is 93758331.

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

It is not a de Polignac number, because 13385739 - 2³ = 13385731 is a prime.

It is a super-2 number, since 2×13385739² = 358356017152242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13385697 and 13385706.

It is not an unprimeable number, because it can be changed into a prime (13385731) 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, 2230954 + ... + 2230959.

It is an arithmetic number, because the mean of its divisors is an integer number (4461914).

Almost surely, 2^13385739 is an apocalyptic number.

13385739 is a deficient number, since it is larger than the sum of its proper divisors (4461917).

13385739 is an equidigital number, since it uses as much as digits as its factorization.

13385739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4461916.

The product of its digits is 68040, while the sum is 39.

The square root of 13385739 is about 3658.6526208428. The cubic root of 13385739 is about 237.4364831069.

The spelling of 13385739 in words is "thirteen million, three hundred eighty-five thousand, seven hundred thirty-nine".