509349980 has 12 divisors (see below), whose sum is σ = 1069635000. Its totient is φ = 203739984.

The previous prime is 509349977. The next prime is 509349983. The reversal of 509349980 is 89943905.

It is an interprime number because it is at equal distance from previous prime (509349977) and next prime (509349983).

It is a super-3 number, since 3×509349980³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509349983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12733730 + ... + 12733769.

It is an arithmetic number, because the mean of its divisors is an integer number (89136250).

Almost surely, 2^509349980 is an apocalyptic number.

It is an amenable number.

509349980 is an abundant number, since it is smaller than the sum of its proper divisors (560285020).

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

509349980 is a wasteful number, since it uses less digits than its factorization.

509349980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25467508 (or 25467506 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 509349980 is about 22568.7833079234. The cubic root of 509349980 is about 798.6173931243.

The spelling of 509349980 in words is "five hundred nine million, three hundred forty-nine thousand, nine hundred eighty".