905352009 has 4 divisors (see below), whose sum is σ = 1207136016. Its totient is φ = 603568004.

The previous prime is 905351969. The next prime is 905352011. The reversal of 905352009 is 900253509.

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 905352009 - 2¹⁷ = 905220937 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (905352029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150891999 + ... + 150892004.

It is an arithmetic number, because the mean of its divisors is an integer number (301784004).

Almost surely, 2^905352009 is an apocalyptic number.

It is an amenable number.

905352009 is a deficient number, since it is larger than the sum of its proper divisors (301784007).

905352009 is a wasteful number, since it uses less digits than its factorization.

905352009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301784006.

The product of its (nonzero) digits is 12150, while the sum is 33.

The square root of 905352009 is about 30089.0679317256. The cubic root of 905352009 is about 967.3994212025.

The spelling of 905352009 in words is "nine hundred five million, three hundred fifty-two thousand, nine".