509029919 has 2 divisors, whose sum is σ = 509029920. Its totient is φ = 509029918.

The previous prime is 509029903. The next prime is 509029957. The reversal of 509029919 is 919920905.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 509029919 - 2⁴ = 509029903 is a prime.

It is a super-2 number, since 2×509029919² = 518222916874293122, which contains 22 as substring.

It is a Chen prime.

It is equal to p_26805887 and since 509029919 and 26805887 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 509029919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (509029999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254514959 + 254514960.

It is an arithmetic number, because the mean of its divisors is an integer number (254514960).

Almost surely, 2^509029919 is an apocalyptic number.

509029919 is a deficient number, since it is larger than the sum of its proper divisors (1).

509029919 is an equidigital number, since it uses as much as digits as its factorization.

509029919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65610, while the sum is 44.

The square root of 509029919 is about 22561.6914037933. The cubic root of 509029919 is about 798.4500819442.

The spelling of 509029919 in words is "five hundred nine million, twenty-nine thousand, nine hundred nineteen".