4968991 has 2 divisors, whose sum is σ = 4968992. Its totient is φ = 4968990.

The previous prime is 4968979. The next prime is 4969031. The reversal of 4968991 is 1998694.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4968991 - 2⁹ = 4968479 is a prime.

4968991 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4965991) 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, 2484495 + 2484496.

It is an arithmetic number, because the mean of its divisors is an integer number (2484496).

Almost surely, 2^4968991 is an apocalyptic number.

4968991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4968991 is an equidigital number, since it uses as much as digits as its factorization.

4968991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 46.

The square root of 4968991 is about 2229.1233702960. The cubic root of 4968991 is about 170.6433637380.

The spelling of 4968991 in words is "four million, nine hundred sixty-eight thousand, nine hundred ninety-one".