87109013 has 4 divisors (see below), whose sum is σ = 89134848. Its totient is φ = 85083180.

The previous prime is 87108991. The next prime is 87109067. The reversal of 87109013 is 31090178.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87109013 - 2⁸ = 87108757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87109093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1012853 + ... + 1012938.

It is an arithmetic number, because the mean of its divisors is an integer number (22283712).

Almost surely, 2^87109013 is an apocalyptic number.

It is an amenable number.

87109013 is a deficient number, since it is larger than the sum of its proper divisors (2025835).

87109013 is a wasteful number, since it uses less digits than its factorization.

87109013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025834.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 87109013 is about 9333.2209338470. The cubic root of 87109013 is about 443.2897584071.

The spelling of 87109013 in words is "eighty-seven million, one hundred nine thousand, thirteen".