989764 has 12 divisors (see below), whose sum is σ = 1739500. Its totient is φ = 492768.

The previous prime is 989761. The next prime is 989777. The reversal of 989764 is 467989.

It can be written as a sum of positive squares in 2 ways, for example, as 412164 + 577600 = 642^2 + 760^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 989764.

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 3 ways as a sum of consecutive naturals, for example, 1042 + ... + 1750.

2⁹⁸⁹⁷⁶⁴ is an apocalyptic number.

It is an amenable number.

989764 is a deficient number, since it is larger than the sum of its proper divisors (749736).

989764 is a wasteful number, since it uses less digits than its factorization.

989764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062 (or 1060 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 989764 is about 994.8688355758. The cubic root of 989764 is about 99.6576291598.

The spelling of 989764 in words is "nine hundred eighty-nine thousand, seven hundred sixty-four".