13385987 has 8 divisors (see below), whose sum is σ = 14212656. Its totient is φ = 12563712.

The previous prime is 13385951. The next prime is 13386001. The reversal of 13385987 is 78958331.

It is a happy number.

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 13385987 - 2⁶ = 13385923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13385917) 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, 6908 + ... + 8630.

It is an arithmetic number, because the mean of its divisors is an integer number (1776582).

Almost surely, 2^13385987 is an apocalyptic number.

13385987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13385987 is a deficient number, since it is larger than the sum of its proper divisors (826669).

13385987 is a wasteful number, since it uses less digits than its factorization.

13385987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197.

The product of its digits is 181440, while the sum is 44.

The square root of 13385987 is about 3658.6865129442. The cubic root of 13385987 is about 237.4379494407.

The spelling of 13385987 in words is "thirteen million, three hundred eighty-five thousand, nine hundred eighty-seven".