889531 has 4 divisors (see below), whose sum is σ = 893464. Its totient is φ = 885600.

The previous prime is 889519. The next prime is 889579. The reversal of 889531 is 135988.

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

It is a cyclic number.

It is not a de Polignac number, because 889531 - 2¹¹ = 887483 is a prime.

It is a super-2 number, since 2×889531² = 1582530799922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (889501) 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, 1605 + ... + 2086.

It is an arithmetic number, because the mean of its divisors is an integer number (223366).

2⁸⁸⁹⁵³¹ is an apocalyptic number.

889531 is the 597-th centered pentagonal number.

889531 is a deficient number, since it is larger than the sum of its proper divisors (3933).

889531 is a wasteful number, since it uses less digits than its factorization.

889531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3932.

The product of its digits is 8640, while the sum is 34.

The square root of 889531 is about 943.1495109472. The cubic root of 889531 is about 96.1731178931.

The spelling of 889531 in words is "eight hundred eighty-nine thousand, five hundred thirty-one".