13839385 has 24 divisors (see below), whose sum is σ = 19500480. Its totient is φ = 9236064.

The previous prime is 13839383. The next prime is 13839407. The reversal of 13839385 is 58393831.

13839385 = 116² + 117² + ... + 350².

It is a happy number.

It is not a de Polignac number, because 13839385 - 2¹ = 13839383 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (13839383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77226 + ... + 77404.

It is an arithmetic number, because the mean of its divisors is an integer number (812520).

Almost surely, 2^13839385 is an apocalyptic number.

It is an amenable number.

13839385 is a deficient number, since it is larger than the sum of its proper divisors (5661095).

13839385 is an equidigital number, since it uses as much as digits as its factorization.

13839385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 238 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 13839385 is about 3720.1323901173. The cubic root of 13839385 is about 240.0890005562.

The spelling of 13839385 in words is "thirteen million, eight hundred thirty-nine thousand, three hundred eighty-five".