494281 has 2 divisors, whose sum is σ = 494282. Its totient is φ = 494280.

The previous prime is 494269. The next prime is 494287. The reversal of 494281 is 182494.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 409600 + 84681 = 640^2 + 291^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-494281 is a prime.

It is a super-2 number, since 2×494281² = 488627413922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (494287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247140 + 247141.

It is an arithmetic number, because the mean of its divisors is an integer number (247141).

2⁴⁹⁴²⁸¹ is an apocalyptic number.

It is an amenable number.

494281 is a deficient number, since it is larger than the sum of its proper divisors (1).

494281 is an equidigital number, since it uses as much as digits as its factorization.

494281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 28.

The square root of 494281 is about 703.0512072388. The cubic root of 494281 is about 79.0662798997.

The spelling of 494281 in words is "four hundred ninety-four thousand, two hundred eighty-one".