5444402021 has 2 divisors, whose sum is σ = 5444402022. Its totient is φ = 5444402020.

The previous prime is 5444402017. The next prime is 5444402069. The reversal of 5444402021 is 1202044445.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4877485921 + 566916100 = 69839^2 + 23810^2 .

It is a cyclic number.

It is not a de Polignac number, because 5444402021 - 2² = 5444402017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5444402011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2722201010 + 2722201011.

It is an arithmetic number, because the mean of its divisors is an integer number (2722201011).

Almost surely, 2^5444402021 is an apocalyptic number.

It is an amenable number.

5444402021 is a deficient number, since it is larger than the sum of its proper divisors (1).

5444402021 is an equidigital number, since it uses as much as digits as its factorization.

5444402021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 5444402021 is about 73786.1912623222. The cubic root of 5444402021 is about 1759.2061266637.

Adding to 5444402021 its reverse (1202044445), we get a palindrome (6646446466).

The spelling of 5444402021 in words is "five billion, four hundred forty-four million, four hundred two thousand, twenty-one".