90816894 has 36 divisors (see below), whose sum is σ = 228897864. Its totient is φ = 25947432.

The previous prime is 90816883. The next prime is 90816911. The reversal of 90816894 is 49861809.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 50602 + ... + 52365.

It is an arithmetic number, because the mean of its divisors is an integer number (6358274).

Almost surely, 2^90816894 is an apocalyptic number.

90816894 is an abundant number, since it is smaller than the sum of its proper divisors (138080970).

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

90816894 is a wasteful number, since it uses less digits than its factorization.

90816894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102989 (or 102979 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 90816894 is about 9529.7898192982. The cubic root of 90816894 is about 449.4922569495.

The spelling of 90816894 in words is "ninety million, eight hundred sixteen thousand, eight hundred ninety-four".