509979485 has 8 divisors (see below), whose sum is σ = 612214200. Its totient is φ = 407824384.

The previous prime is 509979467. The next prime is 509979493. The reversal of 509979485 is 584979905.

It can be written as a sum of positive squares in 4 ways, for example, as 71537764 + 438441721 = 8458^2 + 20939^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 509979485 - 2⁸ = 509979229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 509979485.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4760 + ... + 32289.

It is an arithmetic number, because the mean of its divisors is an integer number (76526775).

Almost surely, 2^509979485 is an apocalyptic number.

It is an amenable number.

509979485 is a deficient number, since it is larger than the sum of its proper divisors (102234715).

509979485 is a wasteful number, since it uses less digits than its factorization.

509979485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39807.

The product of its (nonzero) digits is 4082400, while the sum is 56.

The square root of 509979485 is about 22582.7253669702. The cubic root of 509979485 is about 798.9462610898.

The spelling of 509979485 in words is "five hundred nine million, nine hundred seventy-nine thousand, four hundred eighty-five".