494256009 has 16 divisors (see below), whose sum is σ = 711547200. Its totient is φ = 303366336.

The previous prime is 494256001. The next prime is 494256017. The reversal of 494256009 is 900652494.

It is an interprime number because it is at equal distance from previous prime (494256001) and next prime (494256017).

It is not a de Polignac number, because 494256009 - 2³ = 494256001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (494256001) 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 15 ways as a sum of consecutive naturals, for example, 1119 + ... + 31460.

It is an arithmetic number, because the mean of its divisors is an integer number (44471700).

Almost surely, 2^494256009 is an apocalyptic number.

It is an amenable number.

494256009 is a deficient number, since it is larger than the sum of its proper divisors (217291191).

494256009 is a wasteful number, since it uses less digits than its factorization.

494256009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32984.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 494256009 is about 22231.8692196585. The cubic root of 494256009 is about 790.6494733872.

The spelling of 494256009 in words is "four hundred ninety-four million, two hundred fifty-six thousand, nine".