494381 has 2 divisors, whose sum is σ = 494382. Its totient is φ = 494380.

The previous prime is 494369. The next prime is 494383. The reversal of 494381 is 183494.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 477481 + 16900 = 691^2 + 130^2 .

It is a cyclic number.

It is not a de Polignac number, because 494381 - 2⁶ = 494317 is a prime.

It is a super-2 number, since 2×494381² = 488825146322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 494383, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 494381.

It is not a weakly prime, because it can be changed into another prime (494383) 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, 247190 + 247191.

It is an arithmetic number, because the mean of its divisors is an integer number (247191).

2⁴⁹⁴³⁸¹ is an apocalyptic number.

It is an amenable number.

494381 is a deficient number, since it is larger than the sum of its proper divisors (1).

494381 is an equidigital number, since it uses as much as digits as its factorization.

494381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 29.

The square root of 494381 is about 703.1223222171. The cubic root of 494381 is about 79.0716116137.

The spelling of 494381 in words is "four hundred ninety-four thousand, three hundred eighty-one".