989606 has 4 divisors (see below), whose sum is σ = 1484412. Its totient is φ = 494802.

The previous prime is 989581. The next prime is 989623. The reversal of 989606 is 606989.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 606989 = 179 ⋅3391.

It is a self number, because there is not a number n which added to its sum of digits gives 989606.

It is a congruent number.

It is an unprimeable number.

989606 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 247400 + ... + 247403.

It is an arithmetic number, because the mean of its divisors is an integer number (371103).

2⁹⁸⁹⁶⁰⁶ is an apocalyptic number.

989606 is a deficient number, since it is larger than the sum of its proper divisors (494806).

989606 is a wasteful number, since it uses less digits than its factorization.

989606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494805.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 989606 is about 994.7894249538. The cubic root of 989606 is about 99.6523259618.

The spelling of 989606 in words is "nine hundred eighty-nine thousand, six hundred six".