13998433309 has 8 divisors (see below), whose sum is σ = 16190959680. Its totient is φ = 11854094496.

The previous prime is 13998433303. The next prime is 13998433321. The reversal of 13998433309 is 90333489931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13998433309 - 2²³ = 13990044701 is a prime.

It is a super-2 number, since 2×13998433309² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13998433303) 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, 12046264 + ... + 12047425.

It is an arithmetic number, because the mean of its divisors is an integer number (2023869960).

Almost surely, 2^13998433309 is an apocalyptic number.

It is an amenable number.

13998433309 is a deficient number, since it is larger than the sum of its proper divisors (2192526371).

13998433309 is an equidigital number, since it uses as much as digits as its factorization.

13998433309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24093779.

The product of its (nonzero) digits is 1889568, while the sum is 52.

The spelling of 13998433309 in words is "thirteen billion, nine hundred ninety-eight million, four hundred thirty-three thousand, three hundred nine".