13091687939 has 8 divisors (see below), whose sum is σ = 14394298368. Its totient is φ = 11807820360.

The previous prime is 13091687899. The next prime is 13091687969. The reversal of 13091687939 is 93978619031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13091687939 - 2²⁰ = 13090639363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13091687969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4684247 + ... + 4687040.

It is an arithmetic number, because the mean of its divisors is an integer number (1799287296).

Almost surely, 2^13091687939 is an apocalyptic number.

13091687939 is a deficient number, since it is larger than the sum of its proper divisors (1302610429).

13091687939 is a wasteful number, since it uses less digits than its factorization.

13091687939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9371425.

The product of its (nonzero) digits is 2204496, while the sum is 56.

The spelling of 13091687939 in words is "thirteen billion, ninety-one million, six hundred eighty-seven thousand, nine hundred thirty-nine".