494909493 has 8 divisors (see below), whose sum is σ = 710639328. Its totient is φ = 304559664.

The previous prime is 494909479. The next prime is 494909557. The reversal of 494909493 is 394909494.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 494909493 - 2⁵ = 494909461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494909453) 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 7 ways as a sum of consecutive naturals, for example, 6344955 + ... + 6345032.

It is an arithmetic number, because the mean of its divisors is an integer number (88829916).

Almost surely, 2^494909493 is an apocalyptic number.

It is an amenable number.

494909493 is a deficient number, since it is larger than the sum of its proper divisors (215729835).

494909493 is a wasteful number, since it uses less digits than its factorization.

494909493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12690003.

The product of its (nonzero) digits is 1259712, while the sum is 51.

The square root of 494909493 is about 22246.5613747383. The cubic root of 494909493 is about 790.9977741523.

Subtracting from 494909493 its reverse (394909494), we obtain a palindrome (99999999).

The spelling of 494909493 in words is "four hundred ninety-four million, nine hundred nine thousand, four hundred ninety-three".