509217419 has 2 divisors, whose sum is σ = 509217420. Its totient is φ = 509217418.

The previous prime is 509217407. The next prime is 509217431. The reversal of 509217419 is 914712905.

It is a balanced prime because it is at equal distance from previous prime (509217407) and next prime (509217431).

It is a cyclic number.

It is not a de Polignac number, because 509217419 - 2¹⁶ = 509151883 is a prime.

It is a super-2 number, since 2×509217419² = 518604759626043122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (509217019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254608709 + 254608710.

It is an arithmetic number, because the mean of its divisors is an integer number (254608710).

Almost surely, 2^509217419 is an apocalyptic number.

509217419 is a deficient number, since it is larger than the sum of its proper divisors (1).

509217419 is an equidigital number, since it uses as much as digits as its factorization.

509217419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 509217419 is about 22565.8462947881. The cubic root of 509217419 is about 798.5481056601.

The spelling of 509217419 in words is "five hundred nine million, two hundred seventeen thousand, four hundred nineteen".