989506 has 24 divisors (see below), whose sum is σ = 1805760. Its totient is φ = 404712.

The previous prime is 989479. The next prime is 989507. The reversal of 989506 is 605989.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (989507) by changing a digit.

989506 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2035 + ... + 2473.

It is an arithmetic number, because the mean of its divisors is an integer number (75240).

2⁹⁸⁹⁵⁰⁶ is an apocalyptic number.

989506 is a deficient number, since it is larger than the sum of its proper divisors (816254).

989506 is a wasteful number, since it uses less digits than its factorization.

989506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 989506 is about 994.7391617907. The cubic root of 989506 is about 99.6489692157.

It can be divided in two parts, 98 and 9506, that added together give a square (9604 = 98²).

The spelling of 989506 in words is "nine hundred eighty-nine thousand, five hundred six".