450461009 has 4 divisors (see below), whose sum is σ = 450507120. Its totient is φ = 450414900.

The previous prime is 450460963. The next prime is 450461017. The reversal of 450461009 is 900164054.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 450461009 - 2⁸ = 450460753 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (450461059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1979 + ... + 30080.

It is an arithmetic number, because the mean of its divisors is an integer number (112626780).

Almost surely, 2^450461009 is an apocalyptic number.

It is an amenable number.

450461009 is a deficient number, since it is larger than the sum of its proper divisors (46111).

450461009 is a wasteful number, since it uses less digits than its factorization.

450461009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46110.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 450461009 is about 21224.0667403775. The cubic root of 450461009 is about 766.5710286708.

The spelling of 450461009 in words is "four hundred fifty million, four hundred sixty-one thousand, nine".