513384239 has 4 divisors (see below), whose sum is σ = 518368656. Its totient is φ = 508399824.

The previous prime is 513384229. The next prime is 513384257. The reversal of 513384239 is 932483315.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 932483315 = 5 ⋅186496663.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513384239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513384229) 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 in 3 ways as a sum of consecutive naturals, for example, 2492054 + ... + 2492259.

It is an arithmetic number, because the mean of its divisors is an integer number (129592164).

Almost surely, 2^513384239 is an apocalyptic number.

513384239 is a deficient number, since it is larger than the sum of its proper divisors (4984417).

513384239 is a wasteful number, since it uses less digits than its factorization.

513384239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4984416.

The product of its digits is 77760, while the sum is 38.

The square root of 513384239 is about 22657.9840012301. The cubic root of 513384239 is about 800.7203090614.

The spelling of 513384239 in words is "five hundred thirteen million, three hundred eighty-four thousand, two hundred thirty-nine".