465220509 has 16 divisors (see below), whose sum is σ = 670401984. Its totient is φ = 285264000.

The previous prime is 465220501. The next prime is 465220519. The reversal of 465220509 is 905022564.

It is not a de Polignac number, because 465220509 - 2³ = 465220501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 465220509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (465220501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10267 + ... + 32184.

It is an arithmetic number, because the mean of its divisors is an integer number (41900124).

Almost surely, 2^465220509 is an apocalyptic number.

It is an amenable number.

465220509 is a deficient number, since it is larger than the sum of its proper divisors (205181475).

465220509 is a wasteful number, since it uses less digits than its factorization.

465220509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42748.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 465220509 is about 21568.9709768454. The cubic root of 465220509 is about 774.8535326400.

The spelling of 465220509 in words is "four hundred sixty-five million, two hundred twenty thousand, five hundred nine".