13929224 has 8 divisors (see below), whose sum is σ = 26117310. Its totient is φ = 6964608.

The previous prime is 13929211. The next prime is 13929229. The reversal of 13929224 is 42292931.

It can be written as a sum of positive squares in only one way, i.e., 13557124 + 372100 = 3682^2 + 610^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (13929229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 870569 + ... + 870584.

Almost surely, 2^13929224 is an apocalyptic number.

It is an amenable number.

13929224 is a deficient number, since it is larger than the sum of its proper divisors (12188086).

13929224 is a wasteful number, since it uses less digits than its factorization.

13929224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1741159 (or 1741155 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 13929224 is about 3732.1875622750. The cubic root of 13929224 is about 240.6073966770.

The spelling of 13929224 in words is "thirteen million, nine hundred twenty-nine thousand, two hundred twenty-four".