13940239508 has 12 divisors (see below), whose sum is σ = 26271989940. Its totient is φ = 6433956672.

The previous prime is 13940239499. The next prime is 13940239529. The reversal of 13940239508 is 80593204931.

It can be written as a sum of positive squares in 2 ways, for example, as 9587934724 + 4352304784 = 97918^2 + 65972^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134040713 + ... + 134040816.

It is an arithmetic number, because the mean of its divisors is an integer number (2189332495).

Almost surely, 2^13940239508 is an apocalyptic number.

It is an amenable number.

13940239508 is a deficient number, since it is larger than the sum of its proper divisors (12331750432).

13940239508 is a wasteful number, since it uses less digits than its factorization.

13940239508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268081546 (or 268081544 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 13940239508 in words is "thirteen billion, nine hundred forty million, two hundred thirty-nine thousand, five hundred eight".