4994391931 has 2 divisors, whose sum is σ = 4994391932. Its totient is φ = 4994391930.

The previous prime is 4994391901. The next prime is 4994391947. The reversal of 4994391931 is 1391934994.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4994391931 is a prime.

It is a super-2 number, since 2×4994391931² = 49887901520875817522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4994391901) 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, 2497195965 + 2497195966.

It is an arithmetic number, because the mean of its divisors is an integer number (2497195966).

Almost surely, 2^4994391931 is an apocalyptic number.

4994391931 is a deficient number, since it is larger than the sum of its proper divisors (1).

4994391931 is an equidigital number, since it uses as much as digits as its factorization.

4994391931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 944784, while the sum is 52.

The square root of 4994391931 is about 70671.0119568130. The cubic root of 4994391931 is about 1709.3363966345.

The spelling of 4994391931 in words is "four billion, nine hundred ninety-four million, three hundred ninety-one thousand, nine hundred thirty-one".