89884181 has 2 divisors, whose sum is σ = 89884182. Its totient is φ = 89884180.

The previous prime is 89884141. The next prime is 89884183. The reversal of 89884181 is 18148898.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77281681 + 12602500 = 8791^2 + 3550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89884181 is a prime.

It is a super-2 number, since 2×89884181² = 16158331988081522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 89884183, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89884183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44942090 + 44942091.

It is an arithmetic number, because the mean of its divisors is an integer number (44942091).

Almost surely, 2^89884181 is an apocalyptic number.

It is an amenable number.

89884181 is a deficient number, since it is larger than the sum of its proper divisors (1).

89884181 is an equidigital number, since it uses as much as digits as its factorization.

89884181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 147456, while the sum is 47.

The square root of 89884181 is about 9480.7268181295. The cubic root of 89884181 is about 447.9481581301.

The spelling of 89884181 in words is "eighty-nine million, eight hundred eighty-four thousand, one hundred eighty-one".