493791547 has 4 divisors (see below), whose sum is σ = 495759096. Its totient is φ = 491824000.

The previous prime is 493791521. The next prime is 493791563. The reversal of 493791547 is 745197394.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 745197394 = 2 ⋅372598697.

It is a cyclic number.

It is not a de Polignac number, because 493791547 - 2¹⁹ = 493267259 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 493791547.

It is not an unprimeable number, because it can be changed into a prime (493791587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 983398 + ... + 983899.

It is an arithmetic number, because the mean of its divisors is an integer number (123939774).

Almost surely, 2^493791547 is an apocalyptic number.

493791547 is a deficient number, since it is larger than the sum of its proper divisors (1967549).

493791547 is a wasteful number, since it uses less digits than its factorization.

493791547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967548.

The product of its digits is 952560, while the sum is 49.

The square root of 493791547 is about 22221.4209041636. The cubic root of 493791547 is about 790.4017328647.

The spelling of 493791547 in words is "four hundred ninety-three million, seven hundred ninety-one thousand, five hundred forty-seven".