889638 has 16 divisors (see below), whose sum is σ = 1837056. Its totient is φ = 286920.

The previous prime is 889631. The next prime is 889639. The reversal of 889638 is 836988.

889638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 889638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (889631) 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, 2206 + ... + 2577.

It is an arithmetic number, because the mean of its divisors is an integer number (114816).

2⁸⁸⁹⁶³⁸ is an apocalyptic number.

889638 is an abundant number, since it is smaller than the sum of its proper divisors (947418).

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

889638 is a wasteful number, since it uses less digits than its factorization.

889638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4819.

The product of its digits is 82944, while the sum is 42.

The square root of 889638 is about 943.2062340761. The cubic root of 889638 is about 96.1769738992.

Subtracting from 889638 its reverse (836988), we obtain a triangular number (52650 = T₃₂₄).

The spelling of 889638 in words is "eight hundred eighty-nine thousand, six hundred thirty-eight".