449905081 has 4 divisors (see below), whose sum is σ = 450360064. Its totient is φ = 449450100.

The previous prime is 449905039. The next prime is 449905091. The reversal of 449905081 is 180509944.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 449905081 - 2⁹ = 449904569 is a prime.

It is a super-2 number, since 2×449905081² = 404829163819233122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449905091) 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 in 3 ways as a sum of consecutive naturals, for example, 226005 + ... + 227986.

It is an arithmetic number, because the mean of its divisors is an integer number (112590016).

Almost surely, 2^449905081 is an apocalyptic number.

It is an amenable number.

449905081 is a deficient number, since it is larger than the sum of its proper divisors (454983).

449905081 is an equidigital number, since it uses as much as digits as its factorization.

449905081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454982.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 449905081 is about 21210.9660553215. The cubic root of 449905081 is about 766.2555491048.

The spelling of 449905081 in words is "four hundred forty-nine million, nine hundred five thousand, eighty-one".