448771189 has 2 divisors, whose sum is σ = 448771190. Its totient is φ = 448771188.

The previous prime is 448771129. The next prime is 448771217. The reversal of 448771189 is 981177844.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 353064100 + 95707089 = 18790^2 + 9783^2 .

It is a cyclic number.

It is not a de Polignac number, because 448771189 - 2¹³ = 448762997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (448771109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224385594 + 224385595.

It is an arithmetic number, because the mean of its divisors is an integer number (224385595).

Almost surely, 2^448771189 is an apocalyptic number.

It is an amenable number.

448771189 is a deficient number, since it is larger than the sum of its proper divisors (1).

448771189 is an equidigital number, since it uses as much as digits as its factorization.

448771189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 451584, while the sum is 49.

The square root of 448771189 is about 21184.2202830314. The cubic root of 448771189 is about 765.6112784080.

The spelling of 448771189 in words is "four hundred forty-eight million, seven hundred seventy-one thousand, one hundred eighty-nine".