989335909 has 8 divisors (see below), whose sum is σ = 1051519040. Its totient is φ = 928164096.

The previous prime is 989335861. The next prime is 989335913. The reversal of 989335909 is 909533989.

989335909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-989335909 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 989335909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989335999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250812 + ... + 254725.

It is an arithmetic number, because the mean of its divisors is an integer number (131439880).

Almost surely, 2^989335909 is an apocalyptic number.

It is an amenable number.

989335909 is a deficient number, since it is larger than the sum of its proper divisors (62183131).

989335909 is a wasteful number, since it uses less digits than its factorization.

989335909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505659.

The product of its (nonzero) digits is 2361960, while the sum is 55.

The square root of 989335909 is about 31453.7105760195. The cubic root of 989335909 is about 996.4325917317.

The spelling of 989335909 in words is "nine hundred eighty-nine million, three hundred thirty-five thousand, nine hundred nine".