404421502094891 has 2 divisors, whose sum is σ = 404421502094892. Its totient is φ = 404421502094890.

The previous prime is 404421502094879. The next prime is 404421502094903. The reversal of 404421502094891 is 198490205124404.

It is a balanced prime because it is at equal distance from previous prime (404421502094879) and next prime (404421502094903).

It is a cyclic number.

It is not a de Polignac number, because 404421502094891 - 2¹⁰ = 404421502093867 is a prime.

It is not a weakly prime, because it can be changed into another prime (404421502094851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202210751047445 + 202210751047446.

It is an arithmetic number, because the mean of its divisors is an integer number (202210751047446).

Almost surely, 2^{404421502094891} is an apocalyptic number.

404421502094891 is a deficient number, since it is larger than the sum of its proper divisors (1).

404421502094891 is an equidigital number, since it uses as much as digits as its factorization.

404421502094891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3317760, while the sum is 53.

The spelling of 404421502094891 in words is "four hundred four trillion, four hundred twenty-one billion, five hundred two million, ninety-four thousand, eight hundred ninety-one".