89126221 has 2 divisors, whose sum is σ = 89126222. Its totient is φ = 89126220.

The previous prime is 89126201. The next prime is 89126239. The reversal of 89126221 is 12262198.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74149321 + 14976900 = 8611^2 + 3870^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89126221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89126201) 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, 44563110 + 44563111.

It is an arithmetic number, because the mean of its divisors is an integer number (44563111).

Almost surely, 2^89126221 is an apocalyptic number.

It is an amenable number.

89126221 is a deficient number, since it is larger than the sum of its proper divisors (1).

89126221 is an equidigital number, since it uses as much as digits as its factorization.

89126221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 31.

The square root of 89126221 is about 9440.6684615021. The cubic root of 89126221 is about 446.6854752482.

The spelling of 89126221 in words is "eighty-nine million, one hundred twenty-six thousand, two hundred twenty-one".