4398042380639 has 2 divisors, whose sum is σ = 4398042380640. Its totient is φ = 4398042380638.

The previous prime is 4398042380587. The next prime is 4398042380651. The reversal of 4398042380639 is 9360832408934.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4398042380639 - 2²⁰ = 4398041332063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4398042380239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2199021190319 + 2199021190320.

It is an arithmetic number, because the mean of its divisors is an integer number (2199021190320).

Almost surely, 2^{4398042380639} is an apocalyptic number.

4398042380639 is a deficient number, since it is larger than the sum of its proper divisors (1).

4398042380639 is an equidigital number, since it uses as much as digits as its factorization.

4398042380639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26873856, while the sum is 59.

The spelling of 4398042380639 in words is "four trillion, three hundred ninety-eight billion, forty-two million, three hundred eighty thousand, six hundred thirty-nine".