13940439499 has 4 divisors (see below), whose sum is σ = 15931930864. Its totient is φ = 11948948136.

The previous prime is 13940439493. The next prime is 13940439503. The reversal of 13940439499 is 99493404931.

It is a happy number.

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 13940439499 - 2¹¹ = 13940437451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13940439493) 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, 995745672 + ... + 995745685.

It is an arithmetic number, because the mean of its divisors is an integer number (3982982716).

Almost surely, 2^13940439499 is an apocalyptic number.

13940439499 is a deficient number, since it is larger than the sum of its proper divisors (1991491365).

13940439499 is an equidigital number, since it uses as much as digits as its factorization.

13940439499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991491364.

The product of its (nonzero) digits is 3779136, while the sum is 55.

The spelling of 13940439499 in words is "thirteen billion, nine hundred forty million, four hundred thirty-nine thousand, four hundred ninety-nine".