2840201209 has 2 divisors, whose sum is σ = 2840201210. Its totient is φ = 2840201208.

The previous prime is 2840201201. The next prime is 2840201219. The reversal of 2840201209 is 9021020482.

2840201209 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., 2837905984 + 2295225 = 53272^2 + 1515^2 .

It is a cyclic number.

It is not a de Polignac number, because 2840201209 - 2³ = 2840201201 is a prime.

It is not a weakly prime, because it can be changed into another prime (2840201201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1420100604 + 1420100605.

It is an arithmetic number, because the mean of its divisors is an integer number (1420100605).

Almost surely, 2^2840201209 is an apocalyptic number.

It is an amenable number.

2840201209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2840201209 is an equidigital number, since it uses as much as digits as its factorization.

2840201209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 2840201209 is about 53293.5381542641. The cubic root of 2840201209 is about 1416.1731930966.

The spelling of 2840201209 in words is "two billion, eight hundred forty million, two hundred one thousand, two hundred nine".