13009987 has 8 divisors (see below), whose sum is σ = 13616000. Its totient is φ = 12415680.

The previous prime is 13009967. The next prime is 13010047. The reversal of 13009987 is 78990031.

13009987 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 13009987 - 2¹⁵ = 12977219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13009907) 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, 612 + ... + 5137.

It is an arithmetic number, because the mean of its divisors is an integer number (1702000).

Almost surely, 2^13009987 is an apocalyptic number.

13009987 is a deficient number, since it is larger than the sum of its proper divisors (606013).

13009987 is an equidigital number, since it uses as much as digits as its factorization.

13009987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5853.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 13009987 is about 3606.9359572912. The cubic root of 13009987 is about 235.1936656149.

The spelling of 13009987 in words is "thirteen million, nine thousand, nine hundred eighty-seven".