13990964729 has 4 divisors (see below), whose sum is σ = 15989673984. Its totient is φ = 11992255476.

The previous prime is 13990964717. The next prime is 13990964731. The reversal of 13990964729 is 92746909931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13990964729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13990964749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 999354617 + ... + 999354630.

It is an arithmetic number, because the mean of its divisors is an integer number (3997418496).

Almost surely, 2^13990964729 is an apocalyptic number.

It is an amenable number.

13990964729 is a deficient number, since it is larger than the sum of its proper divisors (1998709255).

13990964729 is an equidigital number, since it uses as much as digits as its factorization.

13990964729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998709254.

The product of its (nonzero) digits is 6613488, while the sum is 59.

The spelling of 13990964729 in words is "thirteen billion, nine hundred ninety million, nine hundred sixty-four thousand, seven hundred twenty-nine".