509970379 has 2 divisors, whose sum is σ = 509970380. Its totient is φ = 509970378.

The previous prime is 509970361. The next prime is 509970397. The reversal of 509970379 is 973079905.

Together with next prime (509970397) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (509970361) and next prime (509970397).

It is a cyclic number.

It is not a de Polignac number, because 509970379 - 2¹¹ = 509968331 is a prime.

It is not a weakly prime, because it can be changed into another prime (509970479) 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, 254985189 + 254985190.

It is an arithmetic number, because the mean of its divisors is an integer number (254985190).

Almost surely, 2^509970379 is an apocalyptic number.

509970379 is a deficient number, since it is larger than the sum of its proper divisors (1).

509970379 is an equidigital number, since it uses as much as digits as its factorization.

509970379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 535815, while the sum is 49.

The square root of 509970379 is about 22582.5237517865. The cubic root of 509970379 is about 798.9415058345.

The spelling of 509970379 in words is "five hundred nine million, nine hundred seventy thousand, three hundred seventy-nine".