404303002021 has 2 divisors, whose sum is σ = 404303002022. Its totient is φ = 404303002020.

The previous prime is 404303001967. The next prime is 404303002057. The reversal of 404303002021 is 120200303404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 399442960225 + 4860041796 = 632015^2 + 69714^2 .

It is a cyclic number.

It is not a de Polignac number, because 404303002021 - 2²⁷ = 404168784293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 404303002021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404303003021) 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, 202151501010 + 202151501011.

It is an arithmetic number, because the mean of its divisors is an integer number (202151501011).

Almost surely, 2^404303002021 is an apocalyptic number.

It is an amenable number.

404303002021 is a deficient number, since it is larger than the sum of its proper divisors (1).

404303002021 is an equidigital number, since it uses as much as digits as its factorization.

404303002021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 404303002021 its reverse (120200303404), we get a palindrome (524503305425).

The spelling of 404303002021 in words is "four hundred four billion, three hundred three million, two thousand, twenty-one".