87039609 has 8 divisors (see below), whose sum is σ = 122879520. Its totient is φ = 54613056.

The previous prime is 87039607. The next prime is 87039637. The reversal of 87039609 is 90693078.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87039609 - 2¹ = 87039607 is a prime.

It is a super-3 number, since 3×87039609³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (87039607) 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 7 ways as a sum of consecutive naturals, for example, 853279 + ... + 853380.

It is an arithmetic number, because the mean of its divisors is an integer number (15359940).

Almost surely, 2^87039609 is an apocalyptic number.

It is an amenable number.

87039609 is a deficient number, since it is larger than the sum of its proper divisors (35839911).

87039609 is a wasteful number, since it uses less digits than its factorization.

87039609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706679.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 87039609 is about 9329.5020767456. The cubic root of 87039609 is about 443.1719969345.

The spelling of 87039609 in words is "eighty-seven million, thirty-nine thousand, six hundred nine".