494433909 has 16 divisors (see below), whose sum is σ = 749531200. Its totient is φ = 321956208.

The previous prime is 494433889. The next prime is 494433971. The reversal of 494433909 is 909334494.

It is not a de Polignac number, because 494433909 - 2⁷ = 494433781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494433509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211774 + ... + 214095.

It is an arithmetic number, because the mean of its divisors is an integer number (46845700).

Almost surely, 2^494433909 is an apocalyptic number.

It is an amenable number.

494433909 is a deficient number, since it is larger than the sum of its proper divisors (255097291).

494433909 is a wasteful number, since it uses less digits than its factorization.

494433909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425921 (or 425915 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The square root of 494433909 is about 22235.8698727979. The cubic root of 494433909 is about 790.7443227948.

The spelling of 494433909 in words is "four hundred ninety-four million, four hundred thirty-three thousand, nine hundred nine".