989894159 has 2 divisors, whose sum is σ = 989894160. Its totient is φ = 989894158.

The previous prime is 989894107. The next prime is 989894161. The reversal of 989894159 is 951498989.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 989894159 - 2⁸ = 989893903 is a prime.

Together with 989894161, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (989897159) 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, 494947079 + 494947080.

It is an arithmetic number, because the mean of its divisors is an integer number (494947080).

Almost surely, 2^989894159 is an apocalyptic number.

989894159 is a deficient number, since it is larger than the sum of its proper divisors (1).

989894159 is an equidigital number, since it uses as much as digits as its factorization.

989894159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8398080, while the sum is 62.

The square root of 989894159 is about 31462.5834762500. The cubic root of 989894159 is about 996.6199746336.

The spelling of 989894159 in words is "nine hundred eighty-nine million, eight hundred ninety-four thousand, one hundred fifty-nine".