4021404004439 has 2 divisors, whose sum is σ = 4021404004440. Its totient is φ = 4021404004438.

The previous prime is 4021404004417. The next prime is 4021404004447. The reversal of 4021404004439 is 9344004041204.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4021404004439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4021404004399 and 4021404004408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4021404004339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010702002219 + 2010702002220.

It is an arithmetic number, because the mean of its divisors is an integer number (2010702002220).

Almost surely, 2^{4021404004439} is an apocalyptic number.

4021404004439 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021404004439 is an equidigital number, since it uses as much as digits as its factorization.

4021404004439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 35.

The spelling of 4021404004439 in words is "four trillion, twenty-one billion, four hundred four million, four thousand, four hundred thirty-nine".