449728519 has 2 divisors, whose sum is σ = 449728520. Its totient is φ = 449728518.

The previous prime is 449728511. The next prime is 449728567. The reversal of 449728519 is 915827944.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 449728519 - 2³ = 449728511 is a prime.

It is a super-2 number, since 2×449728519² = 404511481603866722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449728511) 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, 224864259 + 224864260.

It is an arithmetic number, because the mean of its divisors is an integer number (224864260).

Almost surely, 2^449728519 is an apocalyptic number.

449728519 is a deficient number, since it is larger than the sum of its proper divisors (1).

449728519 is an equidigital number, since it uses as much as digits as its factorization.

449728519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 49.

The square root of 449728519 is about 21206.8036016746. The cubic root of 449728519 is about 766.1552988373.

The spelling of 449728519 in words is "four hundred forty-nine million, seven hundred twenty-eight thousand, five hundred nineteen".