493908511 has 4 divisors (see below), whose sum is σ = 495830592. Its totient is φ = 491986432.

The previous prime is 493908487. The next prime is 493908517. The reversal of 493908511 is 115809394.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 115809394 = 2 ⋅57904697.

It is a cyclic number.

It is not a de Polignac number, because 493908511 - 2¹⁷ = 493777439 is a prime.

It is a Smith number, since the sum of its digits (40) 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (493908517) 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, 960655 + ... + 961168.

It is an arithmetic number, because the mean of its divisors is an integer number (123957648).

Almost surely, 2^493908511 is an apocalyptic number.

493908511 is a deficient number, since it is larger than the sum of its proper divisors (1922081).

493908511 is a wasteful number, since it uses less digits than its factorization.

493908511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922080.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 493908511 is about 22224.0525332352. The cubic root of 493908511 is about 790.4641352086.

The spelling of 493908511 in words is "four hundred ninety-three million, nine hundred eight thousand, five hundred eleven".