493066649 has 2 divisors, whose sum is σ = 493066650. Its totient is φ = 493066648.

The previous prime is 493066633. The next prime is 493066661. The reversal of 493066649 is 946660394.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 493062025 + 4624 = 22205^2 + 68^2 .

It is a cyclic number.

It is not a de Polignac number, because 493066649 - 2⁴ = 493066633 is a prime.

It is a super-2 number, since 2×493066649² = 486229440712178402, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (493066669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246533324 + 246533325.

It is an arithmetic number, because the mean of its divisors is an integer number (246533325).

Almost surely, 2^493066649 is an apocalyptic number.

It is an amenable number.

493066649 is a deficient number, since it is larger than the sum of its proper divisors (1).

493066649 is an equidigital number, since it uses as much as digits as its factorization.

493066649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 47.

The square root of 493066649 is about 22205.1041204494. The cubic root of 493066649 is about 790.0147671223.

It can be divided in two parts, 49306 and 6649, that added together give a palindrome (55955).

The spelling of 493066649 in words is "four hundred ninety-three million, sixty-six thousand, six hundred forty-nine".