13399343944 has 32 divisors (see below), whose sum is σ = 28724198400. Its totient is φ = 5740312320.

The previous prime is 13399343941. The next prime is 13399343953. The reversal of 13399343944 is 44934399331.

It is a junction number, because it is equal to n+sod(n) for n = 13399343891 and 13399343900.

It is not an unprimeable number, because it can be changed into a prime (13399343941) 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, 100249 + ... + 191959.

It is an arithmetic number, because the mean of its divisors is an integer number (897631200).

Almost surely, 2^13399343944 is an apocalyptic number.

13399343944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13399343944 is an abundant number, since it is smaller than the sum of its proper divisors (15324854456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13399343944 is a wasteful number, since it uses less digits than its factorization.

13399343944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94333 (or 94329 counting only the distinct ones).

The product of its digits is 3779136, while the sum is 52.

The spelling of 13399343944 in words is "thirteen billion, three hundred ninety-nine million, three hundred forty-three thousand, nine hundred forty-four".