13985204479 has 12 divisors (see below), whose sum is σ = 14898449664. Its totient is φ = 13125161984.

The previous prime is 13985204477. The next prime is 13985204483. The reversal of 13985204479 is 97440258931.

It is not a de Polignac number, because 13985204479 - 2¹ = 13985204477 is a prime.

It is a super-2 number, since 2×13985204479² (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 (13985204477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33474 + ... + 170560.

It is an arithmetic number, because the mean of its divisors is an integer number (1241537472).

Almost surely, 2^13985204479 is an apocalyptic number.

13985204479 is a deficient number, since it is larger than the sum of its proper divisors (913245185).

13985204479 is a wasteful number, since it uses less digits than its factorization.

13985204479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137474 (or 137457 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 13985204479 in words is "thirteen billion, nine hundred eighty-five million, two hundred four thousand, four hundred seventy-nine".