494889120806 has 4 divisors (see below), whose sum is σ = 742333681212. Its totient is φ = 247444560402.

The previous prime is 494889120799. The next prime is 494889120809. The reversal of 494889120806 is 608021988494.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494889120809) 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 as a sum of consecutive naturals, namely, 123722280200 + ... + 123722280203.

It is an arithmetic number, because the mean of its divisors is an integer number (185583420303).

Almost surely, 2^494889120806 is an apocalyptic number.

494889120806 is a deficient number, since it is larger than the sum of its proper divisors (247444560406).

494889120806 is a wasteful number, since it uses less digits than its factorization.

494889120806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247444560405.

The product of its (nonzero) digits is 7962624, while the sum is 59.

The spelling of 494889120806 in words is "four hundred ninety-four billion, eight hundred eighty-nine million, one hundred twenty thousand, eight hundred six".