87319099 has 4 divisors (see below), whose sum is σ = 99793264. Its totient is φ = 74844936.

The previous prime is 87319093. The next prime is 87319147. The reversal of 87319099 is 99091378.

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 87319099 - 2⁹ = 87318587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87319093) 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, 6237072 + ... + 6237085.

It is an arithmetic number, because the mean of its divisors is an integer number (24948316).

Almost surely, 2^87319099 is an apocalyptic number.

87319099 is a deficient number, since it is larger than the sum of its proper divisors (12474165).

87319099 is a wasteful number, since it uses less digits than its factorization.

87319099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12474164.

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

The square root of 87319099 is about 9344.4688987657. The cubic root of 87319099 is about 443.6458417442.

The spelling of 87319099 in words is "eighty-seven million, three hundred nineteen thousand, ninety-nine".