13394581439 has 4 divisors (see below), whose sum is σ = 13395092880. Its totient is φ = 13394070000.

The previous prime is 13394581429. The next prime is 13394581457. The reversal of 13394581439 is 93418549331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93418549331 = 58153 ⋅1606427.

It is a cyclic number.

It is not a de Polignac number, because 13394581439 - 2⁴ = 13394581423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13394581429) 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, 214187 + ... + 269564.

It is an arithmetic number, because the mean of its divisors is an integer number (3348773220).

Almost surely, 2^13394581439 is an apocalyptic number.

13394581439 is a deficient number, since it is larger than the sum of its proper divisors (511441).

13394581439 is an equidigital number, since it uses as much as digits as its factorization.

13394581439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511440.

The product of its digits is 1399680, while the sum is 50.

The spelling of 13394581439 in words is "thirteen billion, three hundred ninety-four million, five hundred eighty-one thousand, four hundred thirty-nine".