4991933 has 2 divisors, whose sum is σ = 4991934. Its totient is φ = 4991932.

The previous prime is 4991923. The next prime is 4991951. The reversal of 4991933 is 3391994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3829849 + 1162084 = 1957^2 + 1078^2 .

It is a cyclic number.

It is not a de Polignac number, because 4991933 - 2⁸ = 4991677 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4991923) 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, 2495966 + 2495967.

It is an arithmetic number, because the mean of its divisors is an integer number (2495967).

Almost surely, 2^4991933 is an apocalyptic number.

It is an amenable number.

4991933 is a deficient number, since it is larger than the sum of its proper divisors (1).

4991933 is an equidigital number, since it uses as much as digits as its factorization.

4991933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26244, while the sum is 38.

The square root of 4991933 is about 2234.2634132975. The cubic root of 4991933 is about 170.9055826594.

The spelling of 4991933 in words is "four million, nine hundred ninety-one thousand, nine hundred thirty-three".