13703921 has 48 divisors (see below), whose sum is σ = 19751040. Its totient is φ = 9192960.

The previous prime is 13703897. The next prime is 13703927. The reversal of 13703921 is 12930731.

13703921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-13703921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13703927) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 472535 + ... + 472563.

It is an arithmetic number, because the mean of its divisors is an integer number (411480).

Almost surely, 2^13703921 is an apocalyptic number.

13703921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13703921 is a deficient number, since it is larger than the sum of its proper divisors (6047119).

13703921 is a wasteful number, since it uses less digits than its factorization.

13703921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 13703921 is about 3701.8807382194. The cubic root of 13703921 is about 239.3030765791.

The spelling of 13703921 in words is "thirteen million, seven hundred three thousand, nine hundred twenty-one".