4247439479 has 2 divisors, whose sum is σ = 4247439480. Its totient is φ = 4247439478.

The previous prime is 4247439437. The next prime is 4247439481. The reversal of 4247439479 is 9749347424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4247439479 - 2²⁰ = 4246390903 is a prime.

Together with 4247439481, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4247439479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4247439179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2123719739 + 2123719740.

It is an arithmetic number, because the mean of its divisors is an integer number (2123719740).

Almost surely, 2^4247439479 is an apocalyptic number.

4247439479 is a deficient number, since it is larger than the sum of its proper divisors (1).

4247439479 is an equidigital number, since it uses as much as digits as its factorization.

4247439479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6096384, while the sum is 53.

The square root of 4247439479 is about 65172.3827936343. The cubic root of 4247439479 is about 1619.4805374830.

The spelling of 4247439479 in words is "four billion, two hundred forty-seven million, four hundred thirty-nine thousand, four hundred seventy-nine".