513939 has 8 divisors (see below), whose sum is σ = 690112. Its totient is φ = 340200.

The previous prime is 513937. The next prime is 513943. The reversal of 513939 is 939315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 513939 - 2¹ = 513937 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 513939.

It is not an unprimeable number, because it can be changed into a prime (513937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37 + ... + 1014.

It is an arithmetic number, because the mean of its divisors is an integer number (86264).

2⁵¹³⁹³⁹ is an apocalyptic number.

513939 is a deficient number, since it is larger than the sum of its proper divisors (176173).

513939 is a wasteful number, since it uses less digits than its factorization.

513939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217.

The product of its digits is 3645, while the sum is 30.

The square root of 513939 is about 716.8953898582. The cubic root of 513939 is about 80.1008623647.

The spelling of 513939 in words is "five hundred thirteen thousand, nine hundred thirty-nine".