509970427 has 2 divisors, whose sum is σ = 509970428. Its totient is φ = 509970426.

The previous prime is 509970401. The next prime is 509970457. The reversal of 509970427 is 724079905.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 509970427 - 2¹⁹ = 509446139 is a prime.

It is not a weakly prime, because it can be changed into another prime (509970457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254985213 + 254985214.

It is an arithmetic number, because the mean of its divisors is an integer number (254985214).

Almost surely, 2^509970427 is an apocalyptic number.

509970427 is a deficient number, since it is larger than the sum of its proper divisors (1).

509970427 is an equidigital number, since it uses as much as digits as its factorization.

509970427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 43.

The square root of 509970427 is about 22582.5248145552. The cubic root of 509970427 is about 798.9415309008.

The spelling of 509970427 in words is "five hundred nine million, nine hundred seventy thousand, four hundred twenty-seven".