889792221 has 16 divisors (see below), whose sum is σ = 1192464000. Its totient is φ = 590166528.

The previous prime is 889792219. The next prime is 889792229. The reversal of 889792221 is 122297988.

889792221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 889792221 - 2¹ = 889792219 is a prime.

It is a super-2 number, since 2×889792221² = 1583460393104225682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (889792229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 847705 + ... + 848753.

It is an arithmetic number, because the mean of its divisors is an integer number (74529000).

Almost surely, 2^889792221 is an apocalyptic number.

It is an amenable number.

889792221 is a deficient number, since it is larger than the sum of its proper divisors (302671779).

889792221 is a wasteful number, since it uses less digits than its factorization.

889792221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2228.

The product of its digits is 290304, while the sum is 48.

The square root of 889792221 is about 29829.3851931279. The cubic root of 889792221 is about 961.8253108545.

The spelling of 889792221 in words is "eight hundred eighty-nine million, seven hundred ninety-two thousand, two hundred twenty-one".