4221719039 has 2 divisors, whose sum is σ = 4221719040. Its totient is φ = 4221719038.

The previous prime is 4221719027. The next prime is 4221719057. The reversal of 4221719039 is 9309171224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4221719039 - 2²⁰ = 4220670463 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 4221718993 and 4221719011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4221719239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110859519 + 2110859520.

It is an arithmetic number, because the mean of its divisors is an integer number (2110859520).

Almost surely, 2^4221719039 is an apocalyptic number.

4221719039 is a deficient number, since it is larger than the sum of its proper divisors (1).

4221719039 is an equidigital number, since it uses as much as digits as its factorization.

4221719039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 4221719039 is about 64974.7569368289. The cubic root of 4221719039 is about 1616.2049864496.

The spelling of 4221719039 in words is "four billion, two hundred twenty-one million, seven hundred nineteen thousand, thirty-nine".