447481493 has 2 divisors, whose sum is σ = 447481494. Its totient is φ = 447481492.

The previous prime is 447481487. The next prime is 447481499. The reversal of 447481493 is 394184744.

It is a balanced prime because it is at equal distance from previous prime (447481487) and next prime (447481499).

It can be written as a sum of positive squares in only one way, i.e., 384865924 + 62615569 = 19618^2 + 7913^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-447481493 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (447481499) 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, 223740746 + 223740747.

It is an arithmetic number, because the mean of its divisors is an integer number (223740747).

Almost surely, 2^447481493 is an apocalyptic number.

It is an amenable number.

447481493 is a deficient number, since it is larger than the sum of its proper divisors (1).

447481493 is an equidigital number, since it uses as much as digits as its factorization.

447481493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 44.

The square root of 447481493 is about 21153.7583658318. The cubic root of 447481493 is about 764.8771602781.

The spelling of 447481493 in words is "four hundred forty-seven million, four hundred eighty-one thousand, four hundred ninety-three".