889139 has 2 divisors, whose sum is σ = 889140. Its totient is φ = 889138.

The previous prime is 889123. The next prime is 889171. The reversal of 889139 is 931988.

889139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 889139 - 2⁴ = 889123 is a prime.

It is a super-2 number, since 2×889139² = 1581136322642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (889039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444569 + 444570.

It is an arithmetic number, because the mean of its divisors is an integer number (444570).

2⁸⁸⁹¹³⁹ is an apocalyptic number.

889139 is a deficient number, since it is larger than the sum of its proper divisors (1).

889139 is an equidigital number, since it uses as much as digits as its factorization.

889139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 38.

The square root of 889139 is about 942.9416736999. The cubic root of 889139 is about 96.1589885742.

Subtracting 889139 from its reverse (931988), we obtain a square (42849 = 207²).

The spelling of 889139 in words is "eight hundred eighty-nine thousand, one hundred thirty-nine".