493864253 has 2 divisors, whose sum is σ = 493864254. Its totient is φ = 493864252.

The previous prime is 493864243. The next prime is 493864277. The reversal of 493864253 is 352468394.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 261210244 + 232654009 = 16162^2 + 15253^2 .

It is a cyclic number.

It is not a de Polignac number, because 493864253 - 2¹⁴ = 493847869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (493864213) 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, 246932126 + 246932127.

It is an arithmetic number, because the mean of its divisors is an integer number (246932127).

Almost surely, 2^493864253 is an apocalyptic number.

It is an amenable number.

493864253 is a deficient number, since it is larger than the sum of its proper divisors (1).

493864253 is an equidigital number, since it uses as much as digits as its factorization.

493864253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 44.

The square root of 493864253 is about 22223.0567879399. The cubic root of 493864253 is about 790.4405239487.

The spelling of 493864253 in words is "four hundred ninety-three million, eight hundred sixty-four thousand, two hundred fifty-three".