89842171 has 2 divisors, whose sum is σ = 89842172. Its totient is φ = 89842170.

The previous prime is 89842157. The next prime is 89842183. The reversal of 89842171 is 17124898.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89842171 - 2⁵ = 89842139 is a prime.

It is not a weakly prime, because it can be changed into another prime (89849171) 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, 44921085 + 44921086.

It is an arithmetic number, because the mean of its divisors is an integer number (44921086).

Almost surely, 2^89842171 is an apocalyptic number.

89842171 is a deficient number, since it is larger than the sum of its proper divisors (1).

89842171 is an equidigital number, since it uses as much as digits as its factorization.

89842171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 40.

The square root of 89842171 is about 9478.5110117571. The cubic root of 89842171 is about 447.8783600320.

The spelling of 89842171 in words is "eighty-nine million, eight hundred forty-two thousand, one hundred seventy-one".