889433609 has 2 divisors, whose sum is σ = 889433610. Its totient is φ = 889433608.

The previous prime is 889433603. The next prime is 889433647. The reversal of 889433609 is 906334988.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 826390009 + 63043600 = 28747^2 + 7940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-889433609 is a prime.

It is not a weakly prime, because it can be changed into another prime (889433603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444716804 + 444716805.

It is an arithmetic number, because the mean of its divisors is an integer number (444716805).

Almost surely, 2^889433609 is an apocalyptic number.

It is an amenable number.

889433609 is a deficient number, since it is larger than the sum of its proper divisors (1).

889433609 is an equidigital number, since it uses as much as digits as its factorization.

889433609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1119744, while the sum is 50.

The square root of 889433609 is about 29823.3735348636. The cubic root of 889433609 is about 961.6960790187.

The spelling of 889433609 in words is "eight hundred eighty-nine million, four hundred thirty-three thousand, six hundred nine".