4839999991 has 2 divisors, whose sum is σ = 4839999992. Its totient is φ = 4839999990.

The previous prime is 4839999971. The next prime is 4840000013. The reversal of 4839999991 is 1999999384.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4839999991 - 2¹⁷ = 4839868919 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4839999991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4839999971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2419999995 + 2419999996.

It is an arithmetic number, because the mean of its divisors is an integer number (2419999996).

Almost surely, 2^4839999991 is an apocalyptic number.

4839999991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4839999991 is an equidigital number, since it uses as much as digits as its factorization.

4839999991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51018336, while the sum is 70.

The square root of 4839999991 is about 69570.1084590214. The cubic root of 4839999991 is about 1691.5381105745.

It can be divided in two parts, 483999999 and 1, that added together give a square (484000000 = 22000²).

The spelling of 4839999991 in words is "four billion, eight hundred thirty-nine million, nine hundred ninety-nine thousand, nine hundred ninety-one".