450902609 has 4 divisors (see below), whose sum is σ = 463089204. Its totient is φ = 438716016.

The previous prime is 450902593. The next prime is 450902629. The reversal of 450902609 is 906209054.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 323280400 + 127622209 = 17980^2 + 11297^2 .

It is a cyclic number.

It is not a de Polignac number, because 450902609 - 2⁴ = 450902593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (450902629) 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, 6093242 + ... + 6093315.

It is an arithmetic number, because the mean of its divisors is an integer number (115772301).

Almost surely, 2^450902609 is an apocalyptic number.

It is an amenable number.

450902609 is a deficient number, since it is larger than the sum of its proper divisors (12186595).

450902609 is a wasteful number, since it uses less digits than its factorization.

450902609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12186594.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 450902609 is about 21234.4674762519. The cubic root of 450902609 is about 766.8214441342.

The spelling of 450902609 in words is "four hundred fifty million, nine hundred two thousand, six hundred nine".