2040264209 has 2 divisors, whose sum is σ = 2040264210. Its totient is φ = 2040264208.

The previous prime is 2040264199. The next prime is 2040264211. The reversal of 2040264209 is 9024620402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1778730625 + 261533584 = 42175^2 + 16172^2 .

It is a cyclic number.

It is not a de Polignac number, because 2040264209 - 2¹⁶ = 2040198673 is a prime.

Together with 2040264211, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2040284209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1020132104 + 1020132105.

It is an arithmetic number, because the mean of its divisors is an integer number (1020132105).

Almost surely, 2^2040264209 is an apocalyptic number.

It is an amenable number.

2040264209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2040264209 is an equidigital number, since it uses as much as digits as its factorization.

2040264209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 2040264209 is about 45169.2839106400. The cubic root of 2040264209 is about 1268.3198915018.

The spelling of 2040264209 in words is "two billion, forty million, two hundred sixty-four thousand, two hundred nine".