90579857 has 8 divisors (see below), whose sum is σ = 92649216. Its totient is φ = 88516512.

The previous prime is 90579851. The next prime is 90579869. The reversal of 90579857 is 75897509.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90579857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90579851) 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, 44453 + ... + 46445.

It is an arithmetic number, because the mean of its divisors is an integer number (11581152).

Almost surely, 2^90579857 is an apocalyptic number.

It is an amenable number.

90579857 is a deficient number, since it is larger than the sum of its proper divisors (2069359).

90579857 is a wasteful number, since it uses less digits than its factorization.

90579857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3007.

The product of its (nonzero) digits is 793800, while the sum is 50.

The square root of 90579857 is about 9517.3450604672. The cubic root of 90579857 is about 449.1008498619.

The spelling of 90579857 in words is "ninety million, five hundred seventy-nine thousand, eight hundred fifty-seven".