4990393 has 2 divisors, whose sum is σ = 4990394. Its totient is φ = 4990392.

The previous prime is 4990357. The next prime is 4990409. The reversal of 4990393 is 3930994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4210704 + 779689 = 2052^2 + 883^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4990393 is a prime.

4990393 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (4990303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2495196 + 2495197.

It is an arithmetic number, because the mean of its divisors is an integer number (2495197).

Almost surely, 2^4990393 is an apocalyptic number.

It is an amenable number.

4990393 is a deficient number, since it is larger than the sum of its proper divisors (1).

4990393 is an equidigital number, since it uses as much as digits as its factorization.

4990393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26244, while the sum is 37.

The square root of 4990393 is about 2233.9187541180. The cubic root of 4990393 is about 170.8880061904. Note that the first 3 decimals are identical.

The spelling of 4990393 in words is "four million, nine hundred ninety thousand, three hundred ninety-three".