509349660 has 24 divisors (see below), whose sum is σ = 1426179216. Its totient is φ = 135826560.

The previous prime is 509349593. The next prime is 509349661. The reversal of 509349660 is 66943905.

It is a super-2 number, since 2×509349660² = 518874152284231200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509349661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4244521 + ... + 4244640.

It is an arithmetic number, because the mean of its divisors is an integer number (59424134).

Almost surely, 2^509349660 is an apocalyptic number.

It is an amenable number.

509349660 is an abundant number, since it is smaller than the sum of its proper divisors (916829556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

509349660 is a wasteful number, since it uses less digits than its factorization.

509349660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8489173 (or 8489171 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 42.

The square root of 509349660 is about 22568.7762184838. The cubic root of 509349660 is about 798.6172258801.

The spelling of 509349660 in words is "five hundred nine million, three hundred forty-nine thousand, six hundred sixty".