90885859 has 4 divisors (see below), whose sum is σ = 96232104. Its totient is φ = 85539616.

The previous prime is 90885853. The next prime is 90885863. The reversal of 90885859 is 95858809.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95858809 = 1823 ⋅52583.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90885859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90885853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2673097 + ... + 2673130.

It is an arithmetic number, because the mean of its divisors is an integer number (24058026).

Almost surely, 2^90885859 is an apocalyptic number.

90885859 is a deficient number, since it is larger than the sum of its proper divisors (5346245).

90885859 is a wasteful number, since it uses less digits than its factorization.

90885859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5346244.

The product of its (nonzero) digits is 1036800, while the sum is 52.

The square root of 90885859 is about 9533.4075230213. The cubic root of 90885859 is about 449.6060074081.

The spelling of 90885859 in words is "ninety million, eight hundred eighty-five thousand, eight hundred fifty-nine".