900242009 has 4 divisors (see below), whose sum is σ = 908501220. Its totient is φ = 891982800.

The previous prime is 900241981. The next prime is 900242027.

900242009 is nontrivially palindromic in base 10.

900242009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 798232009 + 102010000 = 28253^2 + 10100^2 .

It is a cyclic number.

It is not a de Polignac number, because 900242009 - 2⁸ = 900241753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (900242029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4129442 + ... + 4129659.

It is an arithmetic number, because the mean of its divisors is an integer number (227125305).

Almost surely, 2^900242009 is an apocalyptic number.

It is an amenable number.

900242009 is a deficient number, since it is larger than the sum of its proper divisors (8259211).

900242009 is a wasteful number, since it uses less digits than its factorization.

900242009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8259210.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 900242009 is about 30004.0332122200. The cubic root of 900242009 is about 965.5759165242.

The spelling of 900242009 in words is "nine hundred million, two hundred forty-two thousand, nine".