4420742639 has 2 divisors, whose sum is σ = 4420742640. Its totient is φ = 4420742638.

The previous prime is 4420742617. The next prime is 4420742663. The reversal of 4420742639 is 9362470244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4420742639 - 2³² = 125775343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4420742596 and 4420742605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4420702639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2210371319 + 2210371320.

It is an arithmetic number, because the mean of its divisors is an integer number (2210371320).

Almost surely, 2^4420742639 is an apocalyptic number.

4420742639 is a deficient number, since it is larger than the sum of its proper divisors (1).

4420742639 is an equidigital number, since it uses as much as digits as its factorization.

4420742639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 41.

The square root of 4420742639 is about 66488.6654926988. The cubic root of 4420742639 is about 1641.2134880343.

The spelling of 4420742639 in words is "four billion, four hundred twenty million, seven hundred forty-two thousand, six hundred thirty-nine".