13953939 has 8 divisors (see below), whose sum is σ = 19414272. Its totient is φ = 8898120.

The previous prime is 13953931. The next prime is 13953997. The reversal of 13953939 is 93935931.

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

It is not a de Polignac number, because 13953939 - 2³ = 13953931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13953939.

It is not an unprimeable number, because it can be changed into a prime (13953931) 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, 101047 + ... + 101184.

It is an arithmetic number, because the mean of its divisors is an integer number (2426784).

Almost surely, 2^13953939 is an apocalyptic number.

13953939 is a deficient number, since it is larger than the sum of its proper divisors (5460333).

13953939 is a wasteful number, since it uses less digits than its factorization.

13953939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202257.

The product of its digits is 98415, while the sum is 42.

The square root of 13953939 is about 3735.4971556675. The cubic root of 13953939 is about 240.7496180047.

The spelling of 13953939 in words is "thirteen million, nine hundred fifty-three thousand, nine hundred thirty-nine".