87936209 has 8 divisors (see below), whose sum is σ = 89011200. Its totient is φ = 86868000.

The previous prime is 87936203. The next prime is 87936217. The reversal of 87936209 is 90263978.

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

It is a cyclic number.

It is not a de Polignac number, because 87936209 - 2⁴ = 87936193 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 87936209.

It is not an unprimeable number, because it can be changed into a prime (87936203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27317 + ... + 30365.

It is an arithmetic number, because the mean of its divisors is an integer number (11126400).

Almost surely, 2^87936209 is an apocalyptic number.

It is an amenable number.

87936209 is a deficient number, since it is larger than the sum of its proper divisors (1074991).

87936209 is a wasteful number, since it uses less digits than its factorization.

87936209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3391.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 87936209 is about 9377.4308315231. The cubic root of 87936209 is about 444.6885149259.

The spelling of 87936209 in words is "eighty-seven million, nine hundred thirty-six thousand, two hundred nine".