506402879 has 2 divisors, whose sum is σ = 506402880. Its totient is φ = 506402878.

The previous prime is 506402867. The next prime is 506402893. The reversal of 506402879 is 978204605.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 506402879 - 2⁸ = 506402623 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (506422879) 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, 253201439 + 253201440.

It is an arithmetic number, because the mean of its divisors is an integer number (253201440).

Almost surely, 2^506402879 is an apocalyptic number.

506402879 is a deficient number, since it is larger than the sum of its proper divisors (1).

506402879 is an equidigital number, since it uses as much as digits as its factorization.

506402879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 506402879 is about 22503.3970546671. The cubic root of 506402879 is about 797.0741450741.

The spelling of 506402879 in words is "five hundred six million, four hundred two thousand, eight hundred seventy-nine".