89664121 has 8 divisors (see below), whose sum is σ = 92669184. Its totient is φ = 86666160.

The previous prime is 89664119. The next prime is 89664149. The reversal of 89664121 is 12146698.

It is a happy number.

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 89664121 - 2¹ = 89664119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89664101) 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 7 ways as a sum of consecutive naturals, for example, 39411 + ... + 41623.

It is an arithmetic number, because the mean of its divisors is an integer number (11583648).

Almost surely, 2^89664121 is an apocalyptic number.

It is an amenable number.

89664121 is a deficient number, since it is larger than the sum of its proper divisors (3005063).

89664121 is a wasteful number, since it uses less digits than its factorization.

89664121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3551.

The product of its digits is 20736, while the sum is 37.

The square root of 89664121 is about 9469.1140557076. The cubic root of 89664121 is about 447.5822946142.

The spelling of 89664121 in words is "eighty-nine million, six hundred sixty-four thousand, one hundred twenty-one".