4812991 has 2 divisors, whose sum is σ = 4812992. Its totient is φ = 4812990.

The previous prime is 4812943. The next prime is 4813027. The reversal of 4812991 is 1992184.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4812991 - 2¹¹ = 4810943 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4812931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2406495 + 2406496.

It is an arithmetic number, because the mean of its divisors is an integer number (2406496).

Almost surely, 2^4812991 is an apocalyptic number.

4812991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4812991 is an equidigital number, since it uses as much as digits as its factorization.

4812991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 34.

The square root of 4812991 is about 2193.8530032798. The cubic root of 4812991 is about 168.8385770002.

The spelling of 4812991 in words is "four million, eight hundred twelve thousand, nine hundred ninety-one".