13993093 has 4 divisors (see below), whose sum is σ = 14121580. Its totient is φ = 13864608.

The previous prime is 13993087. The next prime is 13993127. The reversal of 13993093 is 39039931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9253764 + 4739329 = 3042^2 + 2177^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13993093 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 (13993003) 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, 64080 + ... + 64297.

It is an arithmetic number, because the mean of its divisors is an integer number (3530395).

Almost surely, 2^13993093 is an apocalyptic number.

It is an amenable number.

13993093 is a deficient number, since it is larger than the sum of its proper divisors (128487).

13993093 is a wasteful number, since it uses less digits than its factorization.

13993093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128486.

The product of its (nonzero) digits is 19683, while the sum is 37.

The square root of 13993093 is about 3740.7342862064. The cubic root of 13993093 is about 240.9745845342.

The spelling of 13993093 in words is "thirteen million, nine hundred ninety-three thousand, ninety-three".