13489807279 has 4 divisors (see below), whose sum is σ = 14527484776. Its totient is φ = 12452129784.

The previous prime is 13489807271. The next prime is 13489807291. The reversal of 13489807279 is 97270898431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13489807279 - 2³ = 13489807271 is a prime.

It is a super-2 number, since 2×13489807279² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13489807271) 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, 518838729 + ... + 518838754.

It is an arithmetic number, because the mean of its divisors is an integer number (3631871194).

Almost surely, 2^13489807279 is an apocalyptic number.

13489807279 is a deficient number, since it is larger than the sum of its proper divisors (1037677497).

13489807279 is a wasteful number, since it uses less digits than its factorization.

13489807279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037677496.

The product of its (nonzero) digits is 6096384, while the sum is 58.

The spelling of 13489807279 in words is "thirteen billion, four hundred eighty-nine million, eight hundred seven thousand, two hundred seventy-nine".