89873143 has 2 divisors, whose sum is σ = 89873144. Its totient is φ = 89873142.

The previous prime is 89873099. The next prime is 89873153. The reversal of 89873143 is 34137898.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89873143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89873143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89873153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44936571 + 44936572.

It is an arithmetic number, because the mean of its divisors is an integer number (44936572).

Almost surely, 2^89873143 is an apocalyptic number.

89873143 is a deficient number, since it is larger than the sum of its proper divisors (1).

89873143 is an equidigital number, since it uses as much as digits as its factorization.

89873143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 43.

The square root of 89873143 is about 9480.1446718919. The cubic root of 89873143 is about 447.9298209985.

The spelling of 89873143 in words is "eighty-nine million, eight hundred seventy-three thousand, one hundred forty-three".