13909044 has 12 divisors (see below), whose sum is σ = 32454464. Its totient is φ = 4636344.

The previous prime is 13909033. The next prime is 13909061. The reversal of 13909044 is 44090931.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 579532 + ... + 579555.

Almost surely, 2^13909044 is an apocalyptic number.

It is an amenable number.

13909044 is an abundant number, since it is smaller than the sum of its proper divisors (18545420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13909044 is a wasteful number, since it uses less digits than its factorization.

13909044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159094 (or 1159092 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 13909044 is about 3729.4830741002. The cubic root of 13909044 is about 240.4911469865.

Adding to 13909044 its reverse (44090931), we get a palindrome (57999975).

The spelling of 13909044 in words is "thirteen million, nine hundred nine thousand, forty-four".