90008885 has 8 divisors (see below), whose sum is σ = 108699576. Its totient is φ = 71547840.

The previous prime is 90008881. The next prime is 90008911. The reversal of 90008885 is 58880009.

It can be written as a sum of positive squares in 4 ways, for example, as 2436721 + 87572164 = 1561^2 + 9358^2 .

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

It is not a de Polignac number, because 90008885 - 2² = 90008881 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90008881) 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, 56546 + ... + 58115.

It is an arithmetic number, because the mean of its divisors is an integer number (13587447).

Almost surely, 2^90008885 is an apocalyptic number.

It is an amenable number.

90008885 is a deficient number, since it is larger than the sum of its proper divisors (18690691).

90008885 is a wasteful number, since it uses less digits than its factorization.

90008885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114823.

The product of its (nonzero) digits is 23040, while the sum is 38.

The square root of 90008885 is about 9487.3012495651. The cubic root of 90008885 is about 448.1552213116.

The spelling of 90008885 in words is "ninety million, eight thousand, eight hundred eighty-five".