493680449 has 4 divisors (see below), whose sum is σ = 493727364. Its totient is φ = 493633536.

The previous prime is 493680437. The next prime is 493680461. The reversal of 493680449 is 944086394.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 944086394 = 2 ⋅472043197.

It is an interprime number because it is at equal distance from previous prime (493680437) and next prime (493680461).

It can be written as a sum of positive squares in 2 ways, for example, as 451987600 + 41692849 = 21260^2 + 6457^2 .

It is a cyclic number.

It is not a de Polignac number, because 493680449 - 2²⁸ = 225244993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (493680469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449 + ... + 31425.

It is an arithmetic number, because the mean of its divisors is an integer number (123431841).

Almost surely, 2^493680449 is an apocalyptic number.

It is an amenable number.

493680449 is a deficient number, since it is larger than the sum of its proper divisors (46915).

493680449 is a wasteful number, since it uses less digits than its factorization.

493680449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46914.

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

The square root of 493680449 is about 22218.9209683999. The cubic root of 493680449 is about 790.3424510087.

The spelling of 493680449 in words is "four hundred ninety-three million, six hundred eighty thousand, four hundred forty-nine".