889780 has 24 divisors (see below), whose sum is σ = 1979208. Its totient is φ = 334848.

The previous prime is 889769. The next prime is 889783. The reversal of 889780 is 87988.

It can be written as a sum of positive squares in 4 ways, for example, as 443556 + 446224 = 666^2 + 668^2 .

It is a super-3 number, since 3×889780³ = 2113339029652056000, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (889783) 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, 969 + ... + 1648.

It is an arithmetic number, because the mean of its divisors is an integer number (82467).

2⁸⁸⁹⁷⁸⁰ is an apocalyptic number.

It is an amenable number.

889780 is an abundant number, since it is smaller than the sum of its proper divisors (1089428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

889780 is a wasteful number, since it uses less digits than its factorization.

889780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2643 (or 2641 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 889780 is about 943.2815062324. The cubic root of 889780 is about 96.1820907384.

The spelling of 889780 in words is "eight hundred eighty-nine thousand, seven hundred eighty".