900224609 has 2 divisors, whose sum is σ = 900224610. Its totient is φ = 900224608.

The previous prime is 900224603. The next prime is 900224687. The reversal of 900224609 is 906422009.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 757350400 + 142874209 = 27520^2 + 11953^2 .

It is an emirp because it is prime and its reverse (906422009) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-900224609 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (900224603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450112304 + 450112305.

It is an arithmetic number, because the mean of its divisors is an integer number (450112305).

Almost surely, 2^900224609 is an apocalyptic number.

It is an amenable number.

900224609 is a deficient number, since it is larger than the sum of its proper divisors (1).

900224609 is an equidigital number, since it uses as much as digits as its factorization.

900224609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 900224609 is about 30003.7432498013. The cubic root of 900224609 is about 965.5696955566.

The spelling of 900224609 in words is "nine hundred million, two hundred twenty-four thousand, six hundred nine".