493888393 has 2 divisors, whose sum is σ = 493888394. Its totient is φ = 493888392.

The previous prime is 493888319. The next prime is 493888427. The reversal of 493888393 is 393888394.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 440496144 + 53392249 = 20988^2 + 7307^2 .

It is a cyclic number.

It is not a de Polignac number, because 493888393 - 2¹³ = 493880201 is a prime.

It is not a weakly prime, because it can be changed into another prime (493888313) 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, 246944196 + 246944197.

It is an arithmetic number, because the mean of its divisors is an integer number (246944197).

Almost surely, 2^493888393 is an apocalyptic number.

It is an amenable number.

493888393 is a deficient number, since it is larger than the sum of its proper divisors (1).

493888393 is an equidigital number, since it uses as much as digits as its factorization.

493888393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4478976, while the sum is 55.

The square root of 493888393 is about 22223.5999109055. The cubic root of 493888393 is about 790.4534026046.

Subtracting from 493888393 its reverse (393888394), we obtain a palindrome (99999999).

It can be divided in two parts, 4938 and 88393, that multiplied together give a palindrome (436484634).

The spelling of 493888393 in words is "four hundred ninety-three million, eight hundred eighty-eight thousand, three hundred ninety-three".