13909860 has 48 divisors (see below), whose sum is σ = 43276800. Its totient is φ = 3709152.

The previous prime is 13909849. The next prime is 13909873. The reversal of 13909860 is 6890931.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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, 12340 + ... + 13419.

It is an arithmetic number, because the mean of its divisors is an integer number (901600).

Almost surely, 2^13909860 is an apocalyptic number.

13909860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13909860 is an abundant number, since it is smaller than the sum of its proper divisors (29366940).

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

13909860 is a wasteful number, since it uses less digits than its factorization.

13909860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25777 (or 25769 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 13909860 is about 3729.5924710349. The cubic root of 13909860 is about 240.4958498484.

The spelling of 13909860 in words is "thirteen million, nine hundred nine thousand, eight hundred sixty".