989276143 has 2 divisors, whose sum is σ = 989276144. Its totient is φ = 989276142.

The previous prime is 989276083. The next prime is 989276191. The reversal of 989276143 is 341672989.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 989276143 - 2²⁹ = 452405231 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (989226143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494638071 + 494638072.

It is an arithmetic number, because the mean of its divisors is an integer number (494638072).

Almost surely, 2^989276143 is an apocalyptic number.

989276143 is a deficient number, since it is larger than the sum of its proper divisors (1).

989276143 is an equidigital number, since it uses as much as digits as its factorization.

989276143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 49.

The square root of 989276143 is about 31452.7604988815. The cubic root of 989276143 is about 996.4125264236.

The spelling of 989276143 in words is "nine hundred eighty-nine million, two hundred seventy-six thousand, one hundred forty-three".