89989065 has 24 divisors (see below), whose sum is σ = 156503880. Its totient is φ = 47833344.

The previous prime is 89989061. The next prime is 89989079. The reversal of 89989065 is 56098998.

It can be written as a sum of positive squares in 4 ways, for example, as 13461561 + 76527504 = 3669^2 + 8748^2 .

It is not a de Polignac number, because 89989065 - 2² = 89989061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89989061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10891 + ... + 17279.

It is an arithmetic number, because the mean of its divisors is an integer number (6520995).

Almost surely, 2^89989065 is an apocalyptic number.

It is an amenable number.

89989065 is a deficient number, since it is larger than the sum of its proper divisors (66514815).

89989065 is a wasteful number, since it uses less digits than its factorization.

89989065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6713 (or 6710 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 54.

The square root of 89989065 is about 9486.2566378946. The cubic root of 89989065 is about 448.1223242314.

The spelling of 89989065 in words is "eighty-nine million, nine hundred eighty-nine thousand, sixty-five".