4048843991 has 2 divisors, whose sum is σ = 4048843992. Its totient is φ = 4048843990.

The previous prime is 4048843963. The next prime is 4048844011. The reversal of 4048843991 is 1993488404.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4048843991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4048843391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2024421995 + 2024421996.

It is an arithmetic number, because the mean of its divisors is an integer number (2024421996).

Almost surely, 2^4048843991 is an apocalyptic number.

4048843991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4048843991 is an equidigital number, since it uses as much as digits as its factorization.

4048843991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 995328, while the sum is 50.

The square root of 4048843991 is about 63630.5271941071. The cubic root of 4048843991 is about 1593.8361797284.

The spelling of 4048843991 in words is "four billion, forty-eight million, eight hundred forty-three thousand, nine hundred ninety-one".