513384979 has 2 divisors, whose sum is σ = 513384980. Its totient is φ = 513384978.

The previous prime is 513384943. The next prime is 513385031. The reversal of 513384979 is 979483315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 513384979 - 2¹⁵ = 513352211 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (513384929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256692489 + 256692490.

It is an arithmetic number, because the mean of its divisors is an integer number (256692490).

Almost surely, 2^513384979 is an apocalyptic number.

513384979 is a deficient number, since it is larger than the sum of its proper divisors (1).

513384979 is an equidigital number, since it uses as much as digits as its factorization.

513384979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 49.

The square root of 513384979 is about 22658.0003310089. Note that the first 3 decimals coincide. The cubic root of 513384979 is about 800.7206937848.

The spelling of 513384979 in words is "five hundred thirteen million, three hundred eighty-four thousand, nine hundred seventy-nine".