13240478439 has 6 divisors (see below), whose sum is σ = 19125135536. Its totient is φ = 8826985620.

The previous prime is 13240478437. The next prime is 13240478443. The reversal of 13240478439 is 93487404231.

13240478439 is a `hidden beast` number, since 132 + 4 + 0 + 478 + 43 + 9 = 666.

It is not a de Polignac number, because 13240478439 - 2¹ = 13240478437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13240478394 and 13240478403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13240478437) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 735582127 + ... + 735582144.

Almost surely, 2^13240478439 is an apocalyptic number.

13240478439 is a deficient number, since it is larger than the sum of its proper divisors (5884657097).

13240478439 is a wasteful number, since it uses less digits than its factorization.

13240478439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471164277 (or 1471164274 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 13240478439 in words is "thirteen billion, two hundred forty million, four hundred seventy-eight thousand, four hundred thirty-nine".