509239085 has 8 divisors (see below), whose sum is σ = 612059136. Its totient is φ = 406743120.

The previous prime is 509238967. The next prime is 509239109. The reversal of 509239085 is 580932905.

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

It is not a de Polignac number, because 509239085 - 2¹⁶ = 509173549 is a prime.

It is a Duffinian number.

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, 77549 + ... + 83858.

It is an arithmetic number, because the mean of its divisors is an integer number (76507392).

Almost surely, 2^509239085 is an apocalyptic number.

It is an amenable number.

509239085 is a deficient number, since it is larger than the sum of its proper divisors (102820051).

509239085 is a wasteful number, since it uses less digits than its factorization.

509239085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162043.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 509239085 is about 22566.3263514468. The cubic root of 509239085 is about 798.5594309455.

The spelling of 509239085 in words is "five hundred nine million, two hundred thirty-nine thousand, eighty-five".