7211440829 has 2 divisors, whose sum is σ = 7211440830. Its totient is φ = 7211440828.

The previous prime is 7211440799. The next prime is 7211440871. The reversal of 7211440829 is 9280441127.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5377288900 + 1834151929 = 73330^2 + 42827^2 .

It is a cyclic number.

It is not a de Polignac number, because 7211440829 - 2⁸ = 7211440573 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7211440792 and 7211440801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7211440889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3605720414 + 3605720415.

It is an arithmetic number, because the mean of its divisors is an integer number (3605720415).

Almost surely, 2^7211440829 is an apocalyptic number.

It is an amenable number.

7211440829 is a deficient number, since it is larger than the sum of its proper divisors (1).

7211440829 is an equidigital number, since it uses as much as digits as its factorization.

7211440829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 7211440829 is about 84920.2027140774. The cubic root of 7211440829 is about 1932.0010056370.

The spelling of 7211440829 in words is "seven billion, two hundred eleven million, four hundred forty thousand, eight hundred twenty-nine".