89866549 has 4 divisors (see below), whose sum is σ = 89928000. Its totient is φ = 89805100.

The previous prime is 89866531. The next prime is 89866559. The reversal of 89866549 is 94566898.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94566898 = 2 ⋅47283449.

It is a cyclic number.

It is not a de Polignac number, because 89866549 - 2⁷ = 89866421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89866549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89866559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28477 + ... + 31474.

It is an arithmetic number, because the mean of its divisors is an integer number (22482000).

Almost surely, 2^89866549 is an apocalyptic number.

It is an amenable number.

89866549 is a deficient number, since it is larger than the sum of its proper divisors (61451).

89866549 is a wasteful number, since it uses less digits than its factorization.

89866549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61450.

The product of its digits is 3732480, while the sum is 55.

The square root of 89866549 is about 9479.7968860097. The cubic root of 89866549 is about 447.9188658477.

The spelling of 89866549 in words is "eighty-nine million, eight hundred sixty-six thousand, five hundred forty-nine".