494639459 has 8 divisors (see below), whose sum is σ = 505085520. Its totient is φ = 484292736.

The previous prime is 494639417. The next prime is 494639477. The reversal of 494639459 is 954936494.

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

It is a cyclic number.

It is not a de Polignac number, because 494639459 - 2¹⁶ = 494573923 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 494639459.

It is not an unprimeable number, because it can be changed into a prime (494639479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14729 + ... + 34730.

It is an arithmetic number, because the mean of its divisors is an integer number (63135690).

Almost surely, 2^494639459 is an apocalyptic number.

494639459 is a deficient number, since it is larger than the sum of its proper divisors (10446061).

494639459 is a wasteful number, since it uses less digits than its factorization.

494639459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49669.

The product of its digits is 4199040, while the sum is 53.

The square root of 494639459 is about 22240.4914289231. The cubic root of 494639459 is about 790.8538857880.

The spelling of 494639459 in words is "four hundred ninety-four million, six hundred thirty-nine thousand, four hundred fifty-nine".