89217143 has 2 divisors, whose sum is σ = 89217144. Its totient is φ = 89217142.

The previous prime is 89217113. The next prime is 89217187. The reversal of 89217143 is 34171298.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89217143 - 2⁸ = 89216887 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89217113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44608571 + 44608572.

It is an arithmetic number, because the mean of its divisors is an integer number (44608572).

Almost surely, 2^89217143 is an apocalyptic number.

89217143 is a deficient number, since it is larger than the sum of its proper divisors (1).

89217143 is an equidigital number, since it uses as much as digits as its factorization.

89217143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 35.

The square root of 89217143 is about 9445.4826769202. The cubic root of 89217143 is about 446.8373188304.

The spelling of 89217143 in words is "eighty-nine million, two hundred seventeen thousand, one hundred forty-three".