13972439 has 8 divisors (see below), whose sum is σ = 15303120. Its totient is φ = 12678336.

The previous prime is 13972433. The next prime is 13972447. The reversal of 13972439 is 93427931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13972439 - 2⁴ = 13972423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13972433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8342 + ... + 9875.

It is an arithmetic number, because the mean of its divisors is an integer number (1912890).

Almost surely, 2^13972439 is an apocalyptic number.

13972439 is a deficient number, since it is larger than the sum of its proper divisors (1330681).

13972439 is a wasteful number, since it uses less digits than its factorization.

13972439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18289.

The product of its digits is 40824, while the sum is 38.

The square root of 13972439 is about 3737.9725788186. The cubic root of 13972439 is about 240.8559655406.

The spelling of 13972439 in words is "thirteen million, nine hundred seventy-two thousand, four hundred thirty-nine".