989711 has 4 divisors (see below), whose sum is σ = 997632. Its totient is φ = 981792.

The previous prime is 989687. The next prime is 989719. The reversal of 989711 is 117989.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 989711 - 2⁶ = 989647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989719) 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 3 ways as a sum of consecutive naturals, for example, 3770 + ... + 4023.

It is an arithmetic number, because the mean of its divisors is an integer number (249408).

2⁹⁸⁹⁷¹¹ is an apocalyptic number.

989711 is a deficient number, since it is larger than the sum of its proper divisors (7921).

989711 is a wasteful number, since it uses less digits than its factorization.

989711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7920.

The product of its digits is 4536, while the sum is 35.

The square root of 989711 is about 994.8421985421. The cubic root of 989711 is about 99.6558503019.

The spelling of 989711 in words is "nine hundred eighty-nine thousand, seven hundred eleven".