89993844 has 36 divisors (see below), whose sum is σ = 235331460. Its totient is φ = 28963200.

The previous prime is 89993843. The next prime is 89993867. The reversal of 89993844 is 44839998.

It can be written as a sum of positive squares in 2 ways, for example, as 24383844 + 65610000 = 4938^2 + 8100^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89993843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42057 + ... + 44144.

It is an arithmetic number, because the mean of its divisors is an integer number (6536985).

Almost surely, 2^89993844 is an apocalyptic number.

It is an amenable number.

89993844 is an abundant number, since it is smaller than the sum of its proper divisors (145337616).

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

89993844 is a wasteful number, since it uses less digits than its factorization.

89993844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86240 (or 86235 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 89993844 is about 9486.5085252689. The cubic root of 89993844 is about 448.1302568199.

The spelling of 89993844 in words is "eighty-nine million, nine hundred ninety-three thousand, eight hundred forty-four".