87995899 has 4 divisors (see below), whose sum is σ = 88084120. Its totient is φ = 87907680.

The previous prime is 87995867. The next prime is 87995981. The reversal of 87995899 is 99859978.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87995899 - 2⁵ = 87995867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87995899.

It is not an unprimeable number, because it can be changed into a prime (87995819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42597 + ... + 44614.

It is an arithmetic number, because the mean of its divisors is an integer number (22021030).

Almost surely, 2^87995899 is an apocalyptic number.

87995899 is a deficient number, since it is larger than the sum of its proper divisors (88221).

87995899 is a wasteful number, since it uses less digits than its factorization.

87995899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88220.

The product of its digits is 14696640, while the sum is 64.

The square root of 87995899 is about 9380.6129330657. The cubic root of 87995899 is about 444.7891085047.

The spelling of 87995899 in words is "eighty-seven million, nine hundred ninety-five thousand, eight hundred ninety-nine".