90000859 has 8 divisors (see below), whose sum is σ = 97166720. Its totient is φ = 82869696.

The previous prime is 90000857. The next prime is 90000877. The reversal of 90000859 is 95800009.

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

It is not a de Polignac number, because 90000859 - 2¹ = 90000857 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 90000859.

It is not an unprimeable number, because it can be changed into a prime (90000857) 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 7 ways as a sum of consecutive naturals, for example, 3147 + ... + 13780.

It is an arithmetic number, because the mean of its divisors is an integer number (12145840).

Almost surely, 2^90000859 is an apocalyptic number.

90000859 is a deficient number, since it is larger than the sum of its proper divisors (7165861).

90000859 is a wasteful number, since it uses less digits than its factorization.

90000859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17349.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 90000859 is about 9486.8782536723. The cubic root of 90000859 is about 448.1419004018.

The spelling of 90000859 in words is "ninety million, eight hundred fifty-nine", and thus it is an aban number.