989847 has 16 divisors (see below), whose sum is σ = 1492960. Its totient is φ = 648000.

The previous prime is 989839. The next prime is 989869. The reversal of 989847 is 748989.

It is not a de Polignac number, because 989847 - 2³ = 989839 is a prime.

It is a Duffinian number.

989847 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1347 + ... + 1947.

It is an arithmetic number, because the mean of its divisors is an integer number (93310).

2⁹⁸⁹⁸⁴⁷ is an apocalyptic number.

989847 is a deficient number, since it is larger than the sum of its proper divisors (503113).

989847 is a wasteful number, since it uses less digits than its factorization.

989847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671 (or 665 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 989847 is about 994.9105487430. The cubic root of 989847 is about 99.6604147909.

The spelling of 989847 in words is "nine hundred eighty-nine thousand, eight hundred forty-seven".