889439 has 2 divisors, whose sum is σ = 889440. Its totient is φ = 889438.

The previous prime is 889429. The next prime is 889453. The reversal of 889439 is 934988.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 889439 - 2¹⁶ = 823903 is a prime.

It is a super-2 number, since 2×889439² = 1582203469442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 889396 and 889405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (889429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444719 + 444720.

It is an arithmetic number, because the mean of its divisors is an integer number (444720).

2⁸⁸⁹⁴³⁹ is an apocalyptic number.

889439 is a deficient number, since it is larger than the sum of its proper divisors (1).

889439 is an equidigital number, since it uses as much as digits as its factorization.

889439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 41.

The square root of 889439 is about 943.1007369311. The cubic root of 889439 is about 96.1698022013.

The spelling of 889439 in words is "eight hundred eighty-nine thousand, four hundred thirty-nine".