459809009 has 4 divisors (see below), whose sum is σ = 501609840. Its totient is φ = 418008180.

The previous prime is 459808997. The next prime is 459809023. The reversal of 459809009 is 900908954.

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 459809009 - 2¹² = 459804913 is a prime.

It is a super-2 number, since 2×459809009² = 422848649515124162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (459809059) 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, 20900399 + ... + 20900420.

It is an arithmetic number, because the mean of its divisors is an integer number (125402460).

Almost surely, 2^459809009 is an apocalyptic number.

It is an amenable number.

459809009 is a deficient number, since it is larger than the sum of its proper divisors (41800831).

459809009 is a wasteful number, since it uses less digits than its factorization.

459809009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41800830.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 459809009 is about 21443.1576266183. The cubic root of 459809009 is about 771.8374116200.

The spelling of 459809009 in words is "four hundred fifty-nine million, eight hundred nine thousand, nine".