450748109 has 6 divisors (see below), whose sum is σ = 524339694. Its totient is φ = 386355480.

The previous prime is 450748087. The next prime is 450748121. The reversal of 450748109 is 901847054.

It can be written as a sum of positive squares in only one way, i.e., 432515209 + 18232900 = 20797^2 + 4270^2 .

It is not a de Polignac number, because 450748109 - 2⁸ = 450747853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450748139) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4599422 + ... + 4599519.

It is an arithmetic number, because the mean of its divisors is an integer number (87389949).

Almost surely, 2^450748109 is an apocalyptic number.

450748109 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

450748109 is a deficient number, since it is larger than the sum of its proper divisors (73591585).

450748109 is an equidigital number, since it uses as much as digits as its factorization.

450748109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9198955 (or 9198948 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 450748109 is about 21230.8292113144. The cubic root of 450748109 is about 766.7338513482.

The spelling of 450748109 in words is "four hundred fifty million, seven hundred forty-eight thousand, one hundred nine".