90318893 has 8 divisors (see below), whose sum is σ = 103302912. Its totient is φ = 77355216.

The previous prime is 90318889. The next prime is 90318901. The reversal of 90318893 is 39881309.

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

It is a cyclic number.

It is not a de Polignac number, because 90318893 - 2² = 90318889 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90318893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90318863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6071 + ... + 14747.

It is an arithmetic number, because the mean of its divisors is an integer number (12912864).

Almost surely, 2^90318893 is an apocalyptic number.

It is an amenable number.

90318893 is a deficient number, since it is larger than the sum of its proper divisors (12984019).

90318893 is a wasteful number, since it uses less digits than its factorization.

90318893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10171.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 90318893 is about 9503.6252556590. The cubic root of 90318893 is about 448.6691428199.

The spelling of 90318893 in words is "ninety million, three hundred eighteen thousand, eight hundred ninety-three".