494646491 has 2 divisors, whose sum is σ = 494646492. Its totient is φ = 494646490.

The previous prime is 494646457. The next prime is 494646511. The reversal of 494646491 is 194646494.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 494646491 - 2¹⁰ = 494645467 is a prime.

It is a super-2 number, since 2×494646491² = 489350302117226162, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (494646401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247323245 + 247323246.

It is an arithmetic number, because the mean of its divisors is an integer number (247323246).

Almost surely, 2^494646491 is an apocalyptic number.

494646491 is a deficient number, since it is larger than the sum of its proper divisors (1).

494646491 is an equidigital number, since it uses as much as digits as its factorization.

494646491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 47.

The square root of 494646491 is about 22240.6495183931. The cubic root of 494646491 is about 790.8576334726.

It can be divided in two parts, 49464 and 6491, that added together give a palindrome (55955).

The spelling of 494646491 in words is "four hundred ninety-four million, six hundred forty-six thousand, four hundred ninety-one".