494690393 has 4 divisors (see below), whose sum is σ = 504024228. Its totient is φ = 485356560.

The previous prime is 494690389. The next prime is 494690401. The reversal of 494690393 is 393096494.

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 417303184 + 77387209 = 20428^2 + 8797^2 .

It is a cyclic number.

It is not a de Polignac number, because 494690393 - 2² = 494690389 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (494690363) 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, 4666838 + ... + 4666943.

It is an arithmetic number, because the mean of its divisors is an integer number (126006057).

Almost surely, 2^494690393 is an apocalyptic number.

It is an amenable number.

494690393 is a deficient number, since it is larger than the sum of its proper divisors (9333835).

494690393 is an equidigital number, since it uses as much as digits as its factorization.

494690393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9333834.

The product of its (nonzero) digits is 629856, while the sum is 47.

The square root of 494690393 is about 22241.6364730656. The cubic root of 494690393 is about 790.8810301174.

The spelling of 494690393 in words is "four hundred ninety-four million, six hundred ninety thousand, three hundred ninety-three".