449731573 has 2 divisors, whose sum is σ = 449731574. Its totient is φ = 449731572.

The previous prime is 449731547. The next prime is 449731603. The reversal of 449731573 is 375137944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 334963204 + 114768369 = 18302^2 + 10713^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449731573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449731523) 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, 224865786 + 224865787.

It is an arithmetic number, because the mean of its divisors is an integer number (224865787).

Almost surely, 2^449731573 is an apocalyptic number.

It is an amenable number.

449731573 is a deficient number, since it is larger than the sum of its proper divisors (1).

449731573 is an equidigital number, since it uses as much as digits as its factorization.

449731573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 43.

The square root of 449731573 is about 21206.8756067460. The cubic root of 449731573 is about 766.1570330932.

The spelling of 449731573 in words is "four hundred forty-nine million, seven hundred thirty-one thousand, five hundred seventy-three".