4212243991 has 2 divisors, whose sum is σ = 4212243992. Its totient is φ = 4212243990.

The previous prime is 4212243929. The next prime is 4212244013. The reversal of 4212243991 is 1993422124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4212243991 - 2⁹ = 4212243479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4212243991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4212243911) 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, 2106121995 + 2106121996.

It is an arithmetic number, because the mean of its divisors is an integer number (2106121996).

Almost surely, 2^4212243991 is an apocalyptic number.

4212243991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4212243991 is an equidigital number, since it uses as much as digits as its factorization.

4212243991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 37.

The square root of 4212243991 is about 64901.8026791244. The cubic root of 4212243991 is about 1614.9949666762.

The spelling of 4212243991 in words is "four billion, two hundred twelve million, two hundred forty-three thousand, nine hundred ninety-one".