89839945 has 16 divisors (see below), whose sum is σ = 117306000. Its totient is φ = 65654784.

The previous prime is 89839933. The next prime is 89839969. The reversal of 89839945 is 54993898.

It can be written as a sum of positive squares in 8 ways, for example, as 2585664 + 87254281 = 1608^2 + 9341^2 .

It is not a de Polignac number, because 89839945 - 2⁵ = 89839913 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 820 + ... + 13429.

It is an arithmetic number, because the mean of its divisors is an integer number (7331625).

Almost surely, 2^89839945 is an apocalyptic number.

It is an amenable number.

89839945 is a deficient number, since it is larger than the sum of its proper divisors (27466055).

89839945 is a wasteful number, since it uses less digits than its factorization.

89839945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14364.

The product of its digits is 2799360, while the sum is 55.

The square root of 89839945 is about 9478.3935875232. The cubic root of 89839945 is about 447.8746610064.

The spelling of 89839945 in words is "eighty-nine million, eight hundred thirty-nine thousand, nine hundred forty-five".