7104440821 has 2 divisors, whose sum is σ = 7104440822. Its totient is φ = 7104440820.

The previous prime is 7104440737. The next prime is 7104440843. The reversal of 7104440821 is 1280444017.

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., 3761982225 + 3342458596 = 61335^2 + 57814^2 .

It is a cyclic number.

It is not a de Polignac number, because 7104440821 - 2¹¹ = 7104438773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7104440621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3552220410 + 3552220411.

It is an arithmetic number, because the mean of its divisors is an integer number (3552220411).

Almost surely, 2^7104440821 is an apocalyptic number.

It is an amenable number.

7104440821 is a deficient number, since it is larger than the sum of its proper divisors (1).

7104440821 is an equidigital number, since it uses as much as digits as its factorization.

7104440821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 7104440821 is about 84287.8450371108. The cubic root of 7104440821 is about 1922.3979750410.

Adding to 7104440821 its reverse (1280444017), we get a palindrome (8384884838).

The spelling of 7104440821 in words is "seven billion, one hundred four million, four hundred forty thousand, eight hundred twenty-one".