90009168 has 20 divisors (see below), whose sum is σ = 232523808. Its totient is φ = 30003040.

The previous prime is 90009167. The next prime is 90009187. The reversal of 90009168 is 86190009.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90009167) 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, 937548 + ... + 937643.

Almost surely, 2^90009168 is an apocalyptic number.

It is an amenable number.

90009168 is an abundant number, since it is smaller than the sum of its proper divisors (142514640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90009168 is a wasteful number, since it uses less digits than its factorization.

90009168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875202 (or 1875196 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 90009168 is about 9487.3161642268. The cubic root of 90009168 is about 448.1556909978.

The spelling of 90009168 in words is "ninety million, nine thousand, one hundred sixty-eight".