493957823 has 2 divisors, whose sum is σ = 493957824. Its totient is φ = 493957822.

The previous prime is 493957787. The next prime is 493957837. The reversal of 493957823 is 328759394.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 493957823 - 2⁶ = 493957759 is a prime.

It is a super-3 number, since 3×493957823³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (493951823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246978911 + 246978912.

It is an arithmetic number, because the mean of its divisors is an integer number (246978912).

Almost surely, 2^493957823 is an apocalyptic number.

493957823 is a deficient number, since it is larger than the sum of its proper divisors (1).

493957823 is an equidigital number, since it uses as much as digits as its factorization.

493957823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 50.

The square root of 493957823 is about 22225.1619341682. The cubic root of 493957823 is about 790.4904410726.

The spelling of 493957823 in words is "four hundred ninety-three million, nine hundred fifty-seven thousand, eight hundred twenty-three".