90894891 has 4 divisors (see below), whose sum is σ = 121193192. Its totient is φ = 60596592.

The previous prime is 90894889. The next prime is 90894893. The reversal of 90894891 is 19849809.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (90894889) and next prime (90894893).

It is not a de Polignac number, because 90894891 - 2¹ = 90894889 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 90894891.

It is not an unprimeable number, because it can be changed into a prime (90894893) 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, 15149146 + ... + 15149151.

It is an arithmetic number, because the mean of its divisors is an integer number (30298298).

Almost surely, 2^90894891 is an apocalyptic number.

90894891 is a deficient number, since it is larger than the sum of its proper divisors (30298301).

90894891 is a wasteful number, since it uses less digits than its factorization.

90894891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30298300.

The product of its (nonzero) digits is 186624, while the sum is 48.

The square root of 90894891 is about 9533.8812138604. The cubic root of 90894891 is about 449.6209004729.

The spelling of 90894891 in words is "ninety million, eight hundred ninety-four thousand, eight hundred ninety-one".