13655439 has 16 divisors (see below), whose sum is σ = 23120640. Its totient is φ = 7803000.

The previous prime is 13655429. The next prime is 13655443. The reversal of 13655439 is 93455631.

It is not a de Polignac number, because 13655439 - 2⁷ = 13655311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13655429) 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 15 ways as a sum of consecutive naturals, for example, 35937 + ... + 36314.

It is an arithmetic number, because the mean of its divisors is an integer number (1445040).

Almost surely, 2^13655439 is an apocalyptic number.

13655439 is a deficient number, since it is larger than the sum of its proper divisors (9465201).

13655439 is an equidigital number, since it uses as much as digits as its factorization.

13655439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72267 (or 72261 counting only the distinct ones).

The product of its digits is 48600, while the sum is 36.

The square root of 13655439 is about 3695.3266432076. The cubic root of 13655439 is about 239.0205394252.

The spelling of 13655439 in words is "thirteen million, six hundred fifty-five thousand, four hundred thirty-nine".