989849 has 6 divisors (see below), whose sum is σ = 1151514. Its totient is φ = 848400.

The previous prime is 989839. The next prime is 989869. The reversal of 989849 is 948989.

It can be written as a sum of positive squares in only one way, i.e., 499849 + 490000 = 707^2 + 700^2 .

It is a de Polignac number, because none of the positive numbers 2^k-989849 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10052 + ... + 10149.

It is an arithmetic number, because the mean of its divisors is an integer number (191919).

2⁹⁸⁹⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

989849 is a deficient number, since it is larger than the sum of its proper divisors (161665).

989849 is a wasteful number, since it uses less digits than its factorization.

989849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20215 (or 20208 counting only the distinct ones).

The product of its digits is 186624, while the sum is 47.

The square root of 989849 is about 994.9115538579. The cubic root of 989849 is about 99.6604819126.

The spelling of 989849 in words is "nine hundred eighty-nine thousand, eight hundred forty-nine".