2072240309 has 2 divisors, whose sum is σ = 2072240310. Its totient is φ = 2072240308.

The previous prime is 2072240273. The next prime is 2072240321. The reversal of 2072240309 is 9030422702.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2069340100 + 2900209 = 45490^2 + 1703^2 .

It is a cyclic number.

It is not a de Polignac number, because 2072240309 - 2²⁴ = 2055463093 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2072240329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1036120154 + 1036120155.

It is an arithmetic number, because the mean of its divisors is an integer number (1036120155).

Almost surely, 2^2072240309 is an apocalyptic number.

It is an amenable number.

2072240309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2072240309 is an equidigital number, since it uses as much as digits as its factorization.

2072240309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 2072240309 is about 45521.8662732538. The cubic root of 2072240309 is about 1274.9115015339.

The spelling of 2072240309 in words is "two billion, seventy-two million, two hundred forty thousand, three hundred nine".