3822440821 has 2 divisors, whose sum is σ = 3822440822. Its totient is φ = 3822440820.

The previous prime is 3822440813. The next prime is 3822440827. The reversal of 3822440821 is 1280442283.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2401980100 + 1420460721 = 49010^2 + 37689^2 .

It is a cyclic number.

It is not a de Polignac number, because 3822440821 - 2³ = 3822440813 is a prime.

It is a super-2 number, since 2×3822440821² = 29222107660094308082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3822440827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1911220410 + 1911220411.

It is an arithmetic number, because the mean of its divisors is an integer number (1911220411).

Almost surely, 2^3822440821 is an apocalyptic number.

It is an amenable number.

3822440821 is a deficient number, since it is larger than the sum of its proper divisors (1).

3822440821 is an equidigital number, since it uses as much as digits as its factorization.

3822440821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 3822440821 is about 61825.8911864601. The cubic root of 3822440821 is about 1563.5565388506.

The spelling of 3822440821 in words is "three billion, eight hundred twenty-two million, four hundred forty thousand, eight hundred twenty-one".