889980173 has 2 divisors, whose sum is σ = 889980174. Its totient is φ = 889980172.

The previous prime is 889980167. The next prime is 889980181. The reversal of 889980173 is 371089988.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 881674249 + 8305924 = 29693^2 + 2882^2 .

It is a cyclic number.

It is not a de Polignac number, because 889980173 - 2¹² = 889976077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (889980103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444990086 + 444990087.

It is an arithmetic number, because the mean of its divisors is an integer number (444990087).

Almost surely, 2^889980173 is an apocalyptic number.

It is an amenable number.

889980173 is a deficient number, since it is larger than the sum of its proper divisors (1).

889980173 is an equidigital number, since it uses as much as digits as its factorization.

889980173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 53.

The square root of 889980173 is about 29832.5354772269. The cubic root of 889980173 is about 961.8930286353.

The spelling of 889980173 in words is "eight hundred eighty-nine million, nine hundred eighty thousand, one hundred seventy-three".