989438347 has 2 divisors, whose sum is σ = 989438348. Its totient is φ = 989438346.

The previous prime is 989438339. The next prime is 989438353. The reversal of 989438347 is 743834989.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 989438347 - 2³ = 989438339 is a prime.

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

It is not a weakly prime, because it can be changed into another prime (989438147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494719173 + 494719174.

It is an arithmetic number, because the mean of its divisors is an integer number (494719174).

Almost surely, 2^989438347 is an apocalyptic number.

989438347 is a deficient number, since it is larger than the sum of its proper divisors (1).

989438347 is an equidigital number, since it uses as much as digits as its factorization.

989438347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5225472, while the sum is 55.

The square root of 989438347 is about 31455.3389268022. The cubic root of 989438347 is about 996.4669814801.

The spelling of 989438347 in words is "nine hundred eighty-nine million, four hundred thirty-eight thousand, three hundred forty-seven".