509446804 has 12 divisors (see below), whose sum is σ = 893365984. Its totient is φ = 254199384.

The previous prime is 509446801. The next prime is 509446823. The reversal of 509446804 is 408644905.

It is a super-2 number, since 2×509446804² = 519072092211628832, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509446801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128814 + ... + 132709.

Almost surely, 2^509446804 is an apocalyptic number.

It is an amenable number.

509446804 is a deficient number, since it is larger than the sum of its proper divisors (383919180).

509446804 is a wasteful number, since it uses less digits than its factorization.

509446804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262014 (or 262012 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 509446804 is about 22570.9282928284. The cubic root of 509446804 is about 798.6679938471.

The spelling of 509446804 in words is "five hundred nine million, four hundred forty-six thousand, eight hundred four".