89443817 has 8 divisors (see below), whose sum is σ = 95033736. Its totient is φ = 83890432.

The previous prime is 89443789. The next prime is 89443841. The reversal of 89443817 is 71834498.

It can be written as a sum of positive squares in 4 ways, for example, as 77774761 + 11669056 = 8819^2 + 3416^2 .

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 89443817 - 2¹⁶ = 89378281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89443877) 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, 3998 + ... + 13959.

It is an arithmetic number, because the mean of its divisors is an integer number (11879217).

Almost surely, 2^89443817 is an apocalyptic number.

It is an amenable number.

89443817 is a deficient number, since it is larger than the sum of its proper divisors (5589919).

89443817 is a wasteful number, since it uses less digits than its factorization.

89443817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18267.

The product of its digits is 193536, while the sum is 44.

The square root of 89443817 is about 9457.4741342496. The cubic root of 89443817 is about 447.2154253258.

The spelling of 89443817 in words is "eighty-nine million, four hundred forty-three thousand, eight hundred seventeen".