13909456 has 20 divisors (see below), whose sum is σ = 29399904. Its totient is φ = 6322400.

The previous prime is 13909453. The next prime is 13909477. The reversal of 13909456 is 65490931.

13909456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13909453) 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, 39340 + ... + 39691.

Almost surely, 2^13909456 is an apocalyptic number.

13909456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13909456 is an abundant number, since it is smaller than the sum of its proper divisors (15490448).

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

13909456 is a wasteful number, since it uses less digits than its factorization.

13909456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79050 (or 79044 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 13909456 is about 3729.5383092281. The cubic root of 13909456 is about 240.4935214936.

It can be divided in two parts, 13909 and 456, that added together give a triangular number (14365 = T₁₆₉).

The spelling of 13909456 in words is "thirteen million, nine hundred nine thousand, four hundred fifty-six".