494193823 has 2 divisors, whose sum is σ = 494193824. Its totient is φ = 494193822.

The previous prime is 494193811. The next prime is 494193827. The reversal of 494193823 is 328391494.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 494193823 - 2⁹ = 494193311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 494193823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (494193827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247096911 + 247096912.

It is an arithmetic number, because the mean of its divisors is an integer number (247096912).

Almost surely, 2^494193823 is an apocalyptic number.

494193823 is a deficient number, since it is larger than the sum of its proper divisors (1).

494193823 is an equidigital number, since it uses as much as digits as its factorization.

494193823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 43.

The square root of 494193823 is about 22230.4705978079. The cubic root of 494193823 is about 790.6163128460.

The spelling of 494193823 in words is "four hundred ninety-four million, one hundred ninety-three thousand, eight hundred twenty-three".