13997729344 has 63 divisors (see below), whose sum is σ = 29082165483. Its totient is φ = 6684154752.

The previous prime is 13997729329. The next prime is 13997729357. The reversal of 13997729344 is 44392779931.

The square root of 13997729344 is 118312.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 21769087 + ... + 21769729.

Almost surely, 2^13997729344 is an apocalyptic number.

13997729344 is the 118312-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13997729344

13997729344 is an abundant number, since it is smaller than the sum of its proper divisors (15084436139).

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

13997729344 is an frugal number, since it uses more digits than its factorization.

13997729344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344 (or 668 counting only the distinct ones).

The product of its digits is 10287648, while the sum is 58.

The spelling of 13997729344 in words is "thirteen billion, nine hundred ninety-seven million, seven hundred twenty-nine thousand, three hundred forty-four".