89778894 has 16 divisors (see below), whose sum is σ = 179656320. Its totient is φ = 29909880.

The previous prime is 89778881. The next prime is 89778917. The reversal of 89778894 is 49887798.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13647 + ... + 19125.

It is an arithmetic number, because the mean of its divisors is an integer number (11228520).

Almost surely, 2^89778894 is an apocalyptic number.

89778894 is an abundant number, since it is smaller than the sum of its proper divisors (89877426).

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

89778894 is a wasteful number, since it uses less digits than its factorization.

89778894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8215.

The product of its digits is 8128512, while the sum is 60.

The square root of 89778894 is about 9475.1725050260. The cubic root of 89778894 is about 447.7731865009.

It can be divided in two parts, 8977 and 8894, that added together give a palindrome (17871).

The spelling of 89778894 in words is "eighty-nine million, seven hundred seventy-eight thousand, eight hundred ninety-four".