89858509 has 8 divisors (see below), whose sum is σ = 96845112. Its totient is φ = 82882560.

The previous prime is 89858507. The next prime is 89858521. The reversal of 89858509 is 90585898.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 40998409 + 48860100 = 6403^2 + 6990^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 89858509 - 2¹ = 89858507 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89858507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28029 + ... + 31069.

It is an arithmetic number, because the mean of its divisors is an integer number (12105639).

Almost surely, 2^89858509 is an apocalyptic number.

It is an amenable number.

89858509 is a deficient number, since it is larger than the sum of its proper divisors (6986603).

89858509 is a wasteful number, since it uses less digits than its factorization.

89858509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5327.

The product of its (nonzero) digits is 1036800, while the sum is 52.

The square root of 89858509 is about 9479.3728168060. The cubic root of 89858509 is about 447.9055076141.

The spelling of 89858509 in words is "eighty-nine million, eight hundred fifty-eight thousand, five hundred nine".