493908479 has 4 divisors (see below), whose sum is σ = 495744840. Its totient is φ = 492072120.

The previous prime is 493908473. The next prime is 493908487. The reversal of 493908479 is 974809394.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 493908479 - 2⁸ = 493908223 is a prime.

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 493908479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (493908473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 917777 + ... + 918314.

It is an arithmetic number, because the mean of its divisors is an integer number (123936210).

Almost surely, 2^493908479 is an apocalyptic number.

493908479 is a deficient number, since it is larger than the sum of its proper divisors (1836361).

493908479 is a wasteful number, since it uses less digits than its factorization.

493908479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836360.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The square root of 493908479 is about 22224.0518132945. The cubic root of 493908479 is about 790.4641181374.

The spelling of 493908479 in words is "four hundred ninety-three million, nine hundred eight thousand, four hundred seventy-nine".