89830121 has 4 divisors (see below), whose sum is σ = 90215892. Its totient is φ = 89444352.

The previous prime is 89830093. The next prime is 89830151. The reversal of 89830121 is 12103898.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43099225 + 46730896 = 6565^2 + 6836^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89830121 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89830151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192536 + ... + 193001.

It is an arithmetic number, because the mean of its divisors is an integer number (22553973).

Almost surely, 2^89830121 is an apocalyptic number.

It is an amenable number.

89830121 is a deficient number, since it is larger than the sum of its proper divisors (385771).

89830121 is a wasteful number, since it uses less digits than its factorization.

89830121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385770.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 89830121 is about 9477.8753420796. The cubic root of 89830121 is about 447.8583353766.

The spelling of 89830121 in words is "eighty-nine million, eight hundred thirty thousand, one hundred twenty-one".