989769 has 16 divisors (see below), whose sum is σ = 1460160. Its totient is φ = 591360.

The previous prime is 989761. The next prime is 989777. The reversal of 989769 is 967989.

It is a happy number.

989769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (989761) and next prime (989777).

It is not a de Polignac number, because 989769 - 2³ = 989761 is a prime.

It is a super-2 number, since 2×989769² = 1959285346722, which contains 22 as substring.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (989761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2769 + ... + 3105.

It is an arithmetic number, because the mean of its divisors is an integer number (91260).

2⁹⁸⁹⁷⁶⁹ is an apocalyptic number.

It is an amenable number.

989769 is a deficient number, since it is larger than the sum of its proper divisors (470391).

989769 is a wasteful number, since it uses less digits than its factorization.

989769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440.

The product of its digits is 244944, while the sum is 48.

The square root of 989769 is about 994.8713484667. The cubic root of 989769 is about 99.6577969733.

The spelling of 989769 in words is "nine hundred eighty-nine thousand, seven hundred sixty-nine".