493593649 has 2 divisors, whose sum is σ = 493593650. Its totient is φ = 493593648.

The previous prime is 493593643. The next prime is 493593677. The reversal of 493593649 is 946395394.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 333318049 + 160275600 = 18257^2 + 12660^2 .

It is a cyclic number.

It is not a de Polignac number, because 493593649 - 2¹¹ = 493591601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 493593596 and 493593605.

It is not a weakly prime, because it can be changed into another prime (493593643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246796824 + 246796825.

It is an arithmetic number, because the mean of its divisors is an integer number (246796825).

Almost surely, 2^493593649 is an apocalyptic number.

It is an amenable number.

493593649 is a deficient number, since it is larger than the sum of its proper divisors (1).

493593649 is an equidigital number, since it uses as much as digits as its factorization.

493593649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3149280, while the sum is 52.

The square root of 493593649 is about 22216.9675923606. The cubic root of 493593649 is about 790.2961283683.

The spelling of 493593649 in words is "four hundred ninety-three million, five hundred ninety-three thousand, six hundred forty-nine".