87485239 has 4 divisors (see below), whose sum is σ = 87674656. Its totient is φ = 87295824.

The previous prime is 87485221. The next prime is 87485249. The reversal of 87485239 is 93258478.

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 87485239 - 2⁵ = 87485207 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 (87485219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94014 + ... + 94939.

It is an arithmetic number, because the mean of its divisors is an integer number (21918664).

Almost surely, 2^87485239 is an apocalyptic number.

87485239 is a deficient number, since it is larger than the sum of its proper divisors (189417).

87485239 is a wasteful number, since it uses less digits than its factorization.

87485239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189416.

The product of its digits is 483840, while the sum is 46.

The square root of 87485239 is about 9353.3544250178. The cubic root of 87485239 is about 443.9270349893.

The spelling of 87485239 in words is "eighty-seven million, four hundred eighty-five thousand, two hundred thirty-nine".