4021404004447 has 2 divisors, whose sum is σ = 4021404004448. Its totient is φ = 4021404004446.

The previous prime is 4021404004439. The next prime is 4021404004477. The reversal of 4021404004447 is 7444004041204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4021404004447 - 2³ = 4021404004439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4021404004417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010702002223 + 2010702002224.

It is an arithmetic number, because the mean of its divisors is an integer number (2010702002224).

Almost surely, 2^{4021404004447} is an apocalyptic number.

4021404004447 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021404004447 is an equidigital number, since it uses as much as digits as its factorization.

4021404004447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57344, while the sum is 34.

The spelling of 4021404004447 in words is "four trillion, twenty-one billion, four hundred four million, four thousand, four hundred forty-seven".