4021404902089 has 2 divisors, whose sum is σ = 4021404902090. Its totient is φ = 4021404902088.

The previous prime is 4021404902071. The next prime is 4021404902101. The reversal of 4021404902089 is 9802094041204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3498845070400 + 522559831689 = 1870520^2 + 722883^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4021404902089 is a prime.

It is not a weakly prime, because it can be changed into another prime (4021404902059) 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, 2010702451044 + 2010702451045.

It is an arithmetic number, because the mean of its divisors is an integer number (2010702451045).

Almost surely, 2^{4021404902089} is an apocalyptic number.

It is an amenable number.

4021404902089 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021404902089 is an equidigital number, since it uses as much as digits as its factorization.

4021404902089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 43.

The spelling of 4021404902089 in words is "four trillion, twenty-one billion, four hundred four million, nine hundred two thousand, eighty-nine".