13722993 has 8 divisors (see below), whose sum is σ = 20330400. Its totient is φ = 9148644.

The previous prime is 13722983. The next prime is 13723009. The reversal of 13722993 is 39922731.

13722993 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13722993 - 2²² = 9528689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13722983) 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, 254103 + ... + 254156.

It is an arithmetic number, because the mean of its divisors is an integer number (2541300).

Almost surely, 2^13722993 is an apocalyptic number.

It is an amenable number.

13722993 is a deficient number, since it is larger than the sum of its proper divisors (6607407).

13722993 is an equidigital number, since it uses as much as digits as its factorization.

13722993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508268 (or 508262 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 13722993 is about 3704.4558304831. The cubic root of 13722993 is about 239.4140392895.

The spelling of 13722993 in words is "thirteen million, seven hundred twenty-two thousand, nine hundred ninety-three".