13439393936 has 40 divisors (see below), whose sum is σ = 26709962328. Its totient is φ = 6546944000.

The previous prime is 13439393917. The next prime is 13439393953. The reversal of 13439393936 is 63939393431.

It can be written as a sum of positive squares in 4 ways, for example, as 149915536 + 13289478400 = 12244^2 + 115280^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485756 + ... + 512676.

Almost surely, 2^13439393936 is an apocalyptic number.

13439393936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13439393936 is a deficient number, since it is larger than the sum of its proper divisors (13270568392).

13439393936 is a wasteful number, since it uses less digits than its factorization.

13439393936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27731 (or 27725 counting only the distinct ones).

The product of its digits is 4251528, while the sum is 53.

The spelling of 13439393936 in words is "thirteen billion, four hundred thirty-nine million, three hundred ninety-three thousand, nine hundred thirty-six".