13998431293 has 16 divisors (see below), whose sum is σ = 17568184320. Its totient is φ = 10835622000.

The previous prime is 13998431201. The next prime is 13998431303. The reversal of 13998431293 is 39213489931.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-13998431293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13998431293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13998461293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 590353 + ... + 613606.

It is an arithmetic number, because the mean of its divisors is an integer number (1098011520).

Almost surely, 2^13998431293 is an apocalyptic number.

It is an amenable number.

13998431293 is a deficient number, since it is larger than the sum of its proper divisors (3569753027).

13998431293 is a wasteful number, since it uses less digits than its factorization.

13998431293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204128.

The product of its digits is 1259712, while the sum is 52.

The spelling of 13998431293 in words is "thirteen billion, nine hundred ninety-eight million, four hundred thirty-one thousand, two hundred ninety-three".