450865709 has 6 divisors (see below), whose sum is σ = 524476494. Its totient is φ = 386456280.

The previous prime is 450865673. The next prime is 450865733. The reversal of 450865709 is 907568054.

It can be written as a sum of positive squares in only one way, i.e., 328696900 + 122168809 = 18130^2 + 11053^2 .

It is not a de Polignac number, because 450865709 - 2¹⁶ = 450800173 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 450865709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450865799) 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, 4600622 + ... + 4600719.

It is an arithmetic number, because the mean of its divisors is an integer number (87412749).

Almost surely, 2^450865709 is an apocalyptic number.

450865709 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

450865709 is a deficient number, since it is larger than the sum of its proper divisors (73610785).

450865709 is an equidigital number, since it uses as much as digits as its factorization.

450865709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9201355 (or 9201348 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 450865709 is about 21233.5985880868. The cubic root of 450865709 is about 766.8005257343.

The spelling of 450865709 in words is "four hundred fifty million, eight hundred sixty-five thousand, seven hundred nine".