85887209 has 8 divisors (see below), whose sum is σ = 87320448. Its totient is φ = 84460320.

The previous prime is 85887203. The next prime is 85887227. The reversal of 85887209 is 90278858.

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 85887209 - 2²⁴ = 69109993 is a prime.

It is a super-2 number, since 2×85887209² = 14753225339619362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85887203) 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, 31124 + ... + 33770.

It is an arithmetic number, because the mean of its divisors is an integer number (10915056).

Almost surely, 2^85887209 is an apocalyptic number.

It is an amenable number.

85887209 is a deficient number, since it is larger than the sum of its proper divisors (1433239).

85887209 is a wasteful number, since it uses less digits than its factorization.

85887209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3175.

The product of its (nonzero) digits is 322560, while the sum is 47.

The square root of 85887209 is about 9267.5352170898. The cubic root of 85887209 is about 441.2074428163.

The spelling of 85887209 in words is "eighty-five million, eight hundred eighty-seven thousand, two hundred nine".