494575993 has 4 divisors (see below), whose sum is σ = 495902308. Its totient is φ = 493249680.

The previous prime is 494575979. The next prime is 494575997. The reversal of 494575993 is 399575494.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 143688169 + 350887824 = 11987^2 + 18732^2 .

It is a cyclic number.

It is not a de Polignac number, because 494575993 - 2¹⁷ = 494444921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (494575997) 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, 662598 + ... + 663343.

It is an arithmetic number, because the mean of its divisors is an integer number (123975577).

Almost surely, 2^494575993 is an apocalyptic number.

It is an amenable number.

494575993 is a deficient number, since it is larger than the sum of its proper divisors (1326315).

494575993 is a wasteful number, since it uses less digits than its factorization.

494575993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326314.

The product of its digits is 6123600, while the sum is 55.

The square root of 494575993 is about 22239.0645711550. The cubic root of 494575993 is about 790.8200601542.

The spelling of 494575993 in words is "four hundred ninety-four million, five hundred seventy-five thousand, nine hundred ninety-three".