13972939 has 8 divisors (see below), whose sum is σ = 14419328. Its totient is φ = 13530240.

The previous prime is 13972901. The next prime is 13972943. The reversal of 13972939 is 93927931.

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 13972939 - 2⁷ = 13972811 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13972895 and 13972904.

It is not an unprimeable number, because it can be changed into a prime (13972949) 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, 8134 + ... + 9700.

It is an arithmetic number, because the mean of its divisors is an integer number (1802416).

Almost surely, 2^13972939 is an apocalyptic number.

13972939 is a deficient number, since it is larger than the sum of its proper divisors (446389).

13972939 is a wasteful number, since it uses less digits than its factorization.

13972939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845.

The product of its digits is 91854, while the sum is 43.

The square root of 13972939 is about 3738.0394593958. The cubic root of 13972939 is about 240.8588384951.

The spelling of 13972939 in words is "thirteen million, nine hundred seventy-two thousand, nine hundred thirty-nine".