1005889 has 4 divisors (see below), whose sum is σ = 1007920. Its totient is φ = 1003860.

The previous prime is 1005883. The next prime is 1005911. The reversal of 1005889 is 9885001.

1005889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1005889 - 2⁷ = 1005761 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1005889.

It is not an unprimeable number, because it can be changed into a prime (1005883) 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, 274 + ... + 1444.

It is an arithmetic number, because the mean of its divisors is an integer number (251980).

2^1005889 is an apocalyptic number.

It is an amenable number.

1005889 is a deficient number, since it is larger than the sum of its proper divisors (2031).

1005889 is an equidigital number, since it uses as much as digits as its factorization.

1005889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2030.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 1005889 is about 1002.9401776776. The cubic root of 1005889 is about 100.1959159189.

The spelling of 1005889 in words is "one million, five thousand, eight hundred eighty-nine".