4342781939 has 2 divisors, whose sum is σ = 4342781940. Its totient is φ = 4342781938.

The previous prime is 4342781923. The next prime is 4342781959. The reversal of 4342781939 is 9391872434.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4342781939 - 2⁴ = 4342781923 is a prime.

It is not a weakly prime, because it can be changed into another prime (4342781959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2171390969 + 2171390970.

It is an arithmetic number, because the mean of its divisors is an integer number (2171390970).

Almost surely, 2^4342781939 is an apocalyptic number.

4342781939 is a deficient number, since it is larger than the sum of its proper divisors (1).

4342781939 is an equidigital number, since it uses as much as digits as its factorization.

4342781939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 50.

The square root of 4342781939 is about 65899.7870937380. The cubic root of 4342781939 is about 1631.5085008852.

The spelling of 4342781939 in words is "four billion, three hundred forty-two million, seven hundred eighty-one thousand, nine hundred thirty-nine".