928889 has 4 divisors (see below), whose sum is σ = 1000356. Its totient is φ = 857424.

The previous prime is 928883. The next prime is 928903. The reversal of 928889 is 988829.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 462400 + 466489 = 680^2 + 683^2 .

It is a cyclic number.

It is not a de Polignac number, because 928889 - 2¹² = 924793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (928883) 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 3 ways as a sum of consecutive naturals, for example, 35714 + ... + 35739.

It is an arithmetic number, because the mean of its divisors is an integer number (250089).

2⁹²⁸⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

928889 is a deficient number, since it is larger than the sum of its proper divisors (71467).

928889 is a wasteful number, since it uses less digits than its factorization.

928889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71466.

The product of its digits is 82944, while the sum is 44.

The square root of 928889 is about 963.7888772963. The cubic root of 928889 is about 97.5711162066.

The spelling of 928889 in words is "nine hundred twenty-eight thousand, eight hundred eighty-nine".