13129986 has 8 divisors (see below), whose sum is σ = 26259984. Its totient is φ = 4376660.

The previous prime is 13129979. The next prime is 13130003. The reversal of 13129986 is 68992131.

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

13129986 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1094160 + ... + 1094171.

It is an arithmetic number, because the mean of its divisors is an integer number (3282498).

Almost surely, 2^13129986 is an apocalyptic number.

13129986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13129986 is a wasteful number, since it uses less digits than its factorization.

13129986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188336.

The product of its digits is 23328, while the sum is 39.

The square root of 13129986 is about 3623.5322545825. The cubic root of 13129986 is about 235.9145649767.

The spelling of 13129986 in words is "thirteen million, one hundred twenty-nine thousand, nine hundred eighty-six".