89887221 has 12 divisors (see below), whose sum is σ = 131966380. Its totient is φ = 58942080.

The previous prime is 89887219. The next prime is 89887247. The reversal of 89887221 is 12278898.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19980900 + 69906321 = 4470^2 + 8361^2 .

It is not a de Polignac number, because 89887221 - 2¹ = 89887219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89887201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81316 + ... + 82413.

Almost surely, 2^89887221 is an apocalyptic number.

It is an amenable number.

89887221 is a deficient number, since it is larger than the sum of its proper divisors (42079159).

89887221 is a wasteful number, since it uses less digits than its factorization.

89887221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163796 (or 163793 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 89887221 is about 9480.8871420348. The cubic root of 89887221 is about 447.9532081364.

The spelling of 89887221 in words is "eighty-nine million, eight hundred eighty-seven thousand, two hundred twenty-one".