889280989 has 2 divisors, whose sum is σ = 889280990. Its totient is φ = 889280988.

The previous prime is 889280971. The next prime is 889281013. The reversal of 889280989 is 989082988.

889280989 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 can be written as a sum of positive squares in only one way, i.e., 444788100 + 444492889 = 21090^2 + 21083^2 .

It is a cyclic number.

It is not a de Polignac number, because 889280989 - 2⁵ = 889280957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (889290989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444640494 + 444640495.

It is an arithmetic number, because the mean of its divisors is an integer number (444640495).

Almost surely, 2^889280989 is an apocalyptic number.

It is an amenable number.

889280989 is a deficient number, since it is larger than the sum of its proper divisors (1).

889280989 is an equidigital number, since it uses as much as digits as its factorization.

889280989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5971968, while the sum is 61.

The square root of 889280989 is about 29820.8146937672. The cubic root of 889280989 is about 961.6410693099.

The spelling of 889280989 in words is "eight hundred eighty-nine million, two hundred eighty thousand, nine hundred eighty-nine".