9221889 has 4 divisors (see below), whose sum is σ = 12295856. Its totient is φ = 6147924.

The previous prime is 9221879. The next prime is 9221893. The reversal of 9221889 is 9881229.

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.

It is not a de Polignac number, because 9221889 - 2⁵ = 9221857 is a prime.

It is a Duffinian number.

9221889 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9221809) 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, 1536979 + ... + 1536984.

It is an arithmetic number, because the mean of its divisors is an integer number (3073964).

Almost surely, 2^9221889 is an apocalyptic number.

It is an amenable number.

9221889 is a deficient number, since it is larger than the sum of its proper divisors (3073967).

9221889 is a wasteful number, since it uses less digits than its factorization.

9221889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3073966.

The product of its digits is 20736, while the sum is 39.

The square root of 9221889 is about 3036.7563287165. The cubic root of 9221889 is about 209.7039592795.

It can be divided in two parts, 9 and 221889, that multiplied together give a triangular number (1997001 = T₁₉₉₈).

The spelling of 9221889 in words is "nine million, two hundred twenty-one thousand, eight hundred eighty-nine".