509019941 has 2 divisors, whose sum is σ = 509019942. Its totient is φ = 509019940.

The previous prime is 509019893. The next prime is 509019947. The reversal of 509019941 is 149910905.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 507555841 + 1464100 = 22529^2 + 1210^2 .

It is a cyclic number.

It is not a de Polignac number, because 509019941 - 2¹⁸ = 508757797 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 509019895 and 509019904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (509019947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254509970 + 254509971.

It is an arithmetic number, because the mean of its divisors is an integer number (254509971).

Almost surely, 2^509019941 is an apocalyptic number.

It is an amenable number.

509019941 is a deficient number, since it is larger than the sum of its proper divisors (1).

509019941 is an equidigital number, since it uses as much as digits as its factorization.

509019941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 38.

The square root of 509019941 is about 22561.4702756713. The cubic root of 509019941 is about 798.4448648397. Note that the first 3 decimals are identical.

The spelling of 509019941 in words is "five hundred nine million, nineteen thousand, nine hundred forty-one".