89892221 has 2 divisors, whose sum is σ = 89892222. Its totient is φ = 89892220.

The previous prime is 89892169. The next prime is 89892233. The reversal of 89892221 is 12229898.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72760900 + 17131321 = 8530^2 + 4139^2 .

It is a cyclic number.

It is not a de Polignac number, because 89892221 - 2¹⁸ = 89630077 is a prime.

It is a super-2 number, since 2×89892221² = 16161222792625682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89892241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44946110 + 44946111.

It is an arithmetic number, because the mean of its divisors is an integer number (44946111).

Almost surely, 2^89892221 is an apocalyptic number.

It is an amenable number.

89892221 is a deficient number, since it is larger than the sum of its proper divisors (1).

89892221 is an equidigital number, since it uses as much as digits as its factorization.

89892221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 41.

The square root of 89892221 is about 9481.1508267720. The cubic root of 89892221 is about 447.9615138203.

The spelling of 89892221 in words is "eighty-nine million, eight hundred ninety-two thousand, two hundred twenty-one".