13934393 has 4 divisors (see below), whose sum is σ = 15201168. Its totient is φ = 12667620.

The previous prime is 13934363. The next prime is 13934399. The reversal of 13934393 is 39343931.

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, and also an emirpimes, since its reverse is a distinct semiprime: 39343931 = 11 ⋅3576721.

It is a cyclic number.

It is not a de Polignac number, because 13934393 - 2⁶ = 13934329 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13934399) 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, 633371 + ... + 633392.

It is an arithmetic number, because the mean of its divisors is an integer number (3800292).

Almost surely, 2^13934393 is an apocalyptic number.

It is an amenable number.

13934393 is a deficient number, since it is larger than the sum of its proper divisors (1266775).

13934393 is a wasteful number, since it uses less digits than its factorization.

13934393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266774.

The product of its digits is 26244, while the sum is 35.

The square root of 13934393 is about 3732.8799873556. The cubic root of 13934393 is about 240.6371553538.

The spelling of 13934393 in words is "thirteen million, nine hundred thirty-four thousand, three hundred ninety-three".