513707939 has 8 divisors (see below), whose sum is σ = 516005568. Its totient is φ = 511416360.

The previous prime is 513707899. The next prime is 513707947. The reversal of 513707939 is 939707315.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513707939 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 513707939.

It is not an unprimeable number, because it can be changed into a prime (513707969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254444 + ... + 256454.

It is an arithmetic number, because the mean of its divisors is an integer number (64500696).

Almost surely, 2^513707939 is an apocalyptic number.

513707939 is a deficient number, since it is larger than the sum of its proper divisors (2297629).

513707939 is a wasteful number, since it uses less digits than its factorization.

513707939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3025.

The product of its (nonzero) digits is 178605, while the sum is 44.

The square root of 513707939 is about 22665.1260530358. The cubic root of 513707939 is about 800.8885642640. Note that the first 3 decimals are identical.

The spelling of 513707939 in words is "five hundred thirteen million, seven hundred seven thousand, nine hundred thirty-nine".