13439953 has 4 divisors (see below), whose sum is σ = 13487728. Its totient is φ = 13392180.

The previous prime is 13439939. The next prime is 13440001. The reversal of 13439953 is 35993431.

13439953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13439953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13439053) 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, 23463 + ... + 24028.

It is an arithmetic number, because the mean of its divisors is an integer number (3371932).

Almost surely, 2^13439953 is an apocalyptic number.

It is an amenable number.

13439953 is a deficient number, since it is larger than the sum of its proper divisors (47775).

13439953 is an equidigital number, since it uses as much as digits as its factorization.

13439953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47774.

The product of its digits is 43740, while the sum is 37.

The square root of 13439953 is about 3666.0541458085. The cubic root of 13439953 is about 237.7566009630.

The spelling of 13439953 in words is "thirteen million, four hundred thirty-nine thousand, nine hundred fifty-three".