13099987 has 8 divisors (see below), whose sum is σ = 13837760. Its totient is φ = 12367080.

The previous prime is 13099937. The next prime is 13099991. The reversal of 13099987 is 78999031.

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 13099987 - 2²³ = 4711379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13099927) 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, 5248 + ... + 7330.

It is an arithmetic number, because the mean of its divisors is an integer number (1729720).

Almost surely, 2^13099987 is an apocalyptic number.

13099987 is a deficient number, since it is larger than the sum of its proper divisors (737773).

13099987 is a wasteful number, since it uses less digits than its factorization.

13099987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2433.

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 13099987 is about 3619.3904182887. The cubic root of 13099987 is about 235.7347577829.

The spelling of 13099987 in words is "thirteen million, ninety-nine thousand, nine hundred eighty-seven".