89709143 has 2 divisors, whose sum is σ = 89709144. Its totient is φ = 89709142.

The previous prime is 89709083. The next prime is 89709149. The reversal of 89709143 is 34190798.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89709143 - 2⁸ = 89708887 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89709143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89709149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44854571 + 44854572.

It is an arithmetic number, because the mean of its divisors is an integer number (44854572).

Almost surely, 2^89709143 is an apocalyptic number.

89709143 is a deficient number, since it is larger than the sum of its proper divisors (1).

89709143 is an equidigital number, since it uses as much as digits as its factorization.

89709143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 89709143 is about 9471.4910652970. The cubic root of 89709143 is about 447.6571951729.

The spelling of 89709143 in words is "eighty-nine million, seven hundred nine thousand, one hundred forty-three".