989009 has 8 divisors (see below), whose sum is σ = 1196928. Its totient is φ = 797760.

The previous prime is 988979. The next prime is 989011. The reversal of 989009 is 900989.

989009 = T₂₂₄ + T₂₂₅ + ... + T₂₅₇.

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 989009 - 2¹² = 984913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 989009.

It is not an unprimeable number, because it can be changed into a prime (989029) 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 7 ways as a sum of consecutive naturals, for example, 4037 + ... + 4274.

It is an arithmetic number, because the mean of its divisors is an integer number (149616).

2⁹⁸⁹⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

989009 is a deficient number, since it is larger than the sum of its proper divisors (207919).

989009 is a wasteful number, since it uses less digits than its factorization.

989009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8335.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 989009 is about 994.4893161819. The cubic root of 989009 is about 99.6322828315.

The spelling of 989009 in words is "nine hundred eighty-nine thousand, nine".