246040009 has 2 divisors, whose sum is σ = 246040010. Its totient is φ = 246040008.

The previous prime is 246040007. The next prime is 246040019. The reversal of 246040009 is 900040642.

246040009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178142409 + 67897600 = 13347^2 + 8240^2 .

It is a cyclic number.

It is not a de Polignac number, because 246040009 - 2¹ = 246040007 is a prime.

Together with 246040007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (246040001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123020004 + 123020005.

It is an arithmetic number, because the mean of its divisors is an integer number (123020005).

Almost surely, 2^246040009 is an apocalyptic number.

It is an amenable number.

246040009 is a deficient number, since it is larger than the sum of its proper divisors (1).

246040009 is an equidigital number, since it uses as much as digits as its factorization.

246040009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 246040009 is about 15685.6625298392. The cubic root of 246040009 is about 626.6166225253.

The spelling of 246040009 in words is "two hundred forty-six million, forty thousand, nine".