494618459 has 4 divisors (see below), whose sum is σ = 505142304. Its totient is φ = 484094616.

The previous prime is 494618437. The next prime is 494618471. The reversal of 494618459 is 954816494.

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 494618459 - 2¹² = 494614363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (494618489) 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, 5261852 + ... + 5261945.

It is an arithmetic number, because the mean of its divisors is an integer number (126285576).

Almost surely, 2^494618459 is an apocalyptic number.

494618459 is a deficient number, since it is larger than the sum of its proper divisors (10523845).

494618459 is a wasteful number, since it uses less digits than its factorization.

494618459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10523844.

The product of its digits is 1244160, while the sum is 50.

The square root of 494618459 is about 22240.0193120420. The cubic root of 494618459 is about 790.8426936854.

The spelling of 494618459 in words is "four hundred ninety-four million, six hundred eighteen thousand, four hundred fifty-nine".