913550009 has 2 divisors, whose sum is σ = 913550010. Its totient is φ = 913550008.

The previous prime is 913550003. The next prime is 913550111. The reversal of 913550009 is 900055319.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 703734784 + 209815225 = 26528^2 + 14485^2 .

It is a cyclic number.

It is not a de Polignac number, because 913550009 - 2⁴ = 913549993 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 (913550003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456775004 + 456775005.

It is an arithmetic number, because the mean of its divisors is an integer number (456775005).

Almost surely, 2^913550009 is an apocalyptic number.

It is an amenable number.

913550009 is a deficient number, since it is larger than the sum of its proper divisors (1).

913550009 is an equidigital number, since it uses as much as digits as its factorization.

913550009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6075, while the sum is 32.

The square root of 913550009 is about 30224.9898097584. The cubic root of 913550009 is about 970.3105991558.

The spelling of 913550009 in words is "nine hundred thirteen million, five hundred fifty thousand, nine".