509922109 has 4 divisors (see below), whose sum is σ = 527505660. Its totient is φ = 492338560.

The previous prime is 509922107. The next prime is 509922151. The reversal of 509922109 is 901229905.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 276290884 + 233631225 = 16622^2 + 15285^2 .

It is a cyclic number.

It is not a de Polignac number, because 509922109 - 2¹ = 509922107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509922107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8791732 + ... + 8791789.

It is an arithmetic number, because the mean of its divisors is an integer number (131876415).

Almost surely, 2^509922109 is an apocalyptic number.

It is an amenable number.

509922109 is a deficient number, since it is larger than the sum of its proper divisors (17583551).

509922109 is a wasteful number, since it uses less digits than its factorization.

509922109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17583550.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 509922109 is about 22581.4549796952. The cubic root of 509922109 is about 798.9162977538.

The spelling of 509922109 in words is "five hundred nine million, nine hundred twenty-two thousand, one hundred nine".