13799943 has 8 divisors (see below), whose sum is σ = 20444400. Its totient is φ = 9199944.

The previous prime is 13799939. The next prime is 13800013. The reversal of 13799943 is 34999731.

It is not a de Polignac number, because 13799943 - 2² = 13799939 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13749943) 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, 255528 + ... + 255581.

It is an arithmetic number, because the mean of its divisors is an integer number (2555550).

Almost surely, 2^13799943 is an apocalyptic number.

13799943 is a deficient number, since it is larger than the sum of its proper divisors (6644457).

13799943 is an equidigital number, since it uses as much as digits as its factorization.

13799943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511118 (or 511112 counting only the distinct ones).

The product of its digits is 183708, while the sum is 45.

The square root of 13799943 is about 3714.8274522513. The cubic root of 13799943 is about 239.8607004141.

The spelling of 13799943 in words is "thirteen million, seven hundred ninety-nine thousand, nine hundred forty-three".