989945347 has 8 divisors (see below), whose sum is σ = 994409840. Its totient is φ = 985491360.

The previous prime is 989945317. The next prime is 989945371. The reversal of 989945347 is 743549989.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 989945347 - 2⁷ = 989945219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 989945291 and 989945300.

It is not an unprimeable number, because it can be changed into a prime (989945317) 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 in 7 ways as a sum of consecutive naturals, for example, 230197 + ... + 234457.

It is an arithmetic number, because the mean of its divisors is an integer number (124301230).

Almost surely, 2^989945347 is an apocalyptic number.

989945347 is a deficient number, since it is larger than the sum of its proper divisors (4464493).

989945347 is a wasteful number, since it uses less digits than its factorization.

989945347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5253.

The product of its digits is 9797760, while the sum is 58.

The square root of 989945347 is about 31463.3969399364. The cubic root of 989945347 is about 996.6371529361.

The spelling of 989945347 in words is "nine hundred eighty-nine million, nine hundred forty-five thousand, three hundred forty-seven".