889990 has 16 divisors (see below), whose sum is σ = 1629360. Its totient is φ = 349920.

The previous prime is 889963. The next prime is 889997. The reversal of 889990 is 99988.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (889997) 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, 120 + ... + 1339.

It is an arithmetic number, because the mean of its divisors is an integer number (101835).

2⁸⁸⁹⁹⁹⁰ is an apocalyptic number.

889990 is a deficient number, since it is larger than the sum of its proper divisors (739370).

889990 is a wasteful number, since it uses less digits than its factorization.

889990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1527.

The product of its (nonzero) digits is 46656, while the sum is 43.

The square root of 889990 is about 943.3928132014. The cubic root of 889990 is about 96.1896568972.

It can be divided in two parts, 8 and 89990, that added together give a palindrome (89998).

The spelling of 889990 in words is "eight hundred eighty-nine thousand, nine hundred ninety".