89660089 has 4 divisors (see below), whose sum is σ = 89769856. Its totient is φ = 89550324.

The previous prime is 89660063. The next prime is 89660093. The reversal of 89660089 is 98006698.

It is a happy number.

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: 98006698 = 2 ⋅49003349.

It is a cyclic number.

It is not a de Polignac number, because 89660089 - 2¹⁹ = 89135801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89660009) 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, 53649 + ... + 55294.

It is an arithmetic number, because the mean of its divisors is an integer number (22442464).

Almost surely, 2^89660089 is an apocalyptic number.

It is an amenable number.

89660089 is a deficient number, since it is larger than the sum of its proper divisors (109767).

89660089 is a wasteful number, since it uses less digits than its factorization.

89660089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109766.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 89660089 is about 9468.9011506088. The cubic root of 89660089 is about 447.5755855803.

The spelling of 89660089 in words is "eighty-nine million, six hundred sixty thousand, eighty-nine".