508780109 has 2 divisors, whose sum is σ = 508780110. Its totient is φ = 508780108.

The previous prime is 508780099. The next prime is 508780117. The reversal of 508780109 is 901087805.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 431392900 + 77387209 = 20770^2 + 8797^2 .

It is a cyclic number.

It is not a de Polignac number, because 508780109 - 2¹² = 508776013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (508780609) 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 as a sum of consecutive naturals, namely, 254390054 + 254390055.

It is an arithmetic number, because the mean of its divisors is an integer number (254390055).

Almost surely, 2^508780109 is an apocalyptic number.

It is an amenable number.

508780109 is a deficient number, since it is larger than the sum of its proper divisors (1).

508780109 is an equidigital number, since it uses as much as digits as its factorization.

508780109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 508780109 is about 22556.1545703163. The cubic root of 508780109 is about 798.3194455806.

The spelling of 508780109 in words is "five hundred eight million, seven hundred eighty thousand, one hundred nine".