517399693 has 8 divisors (see below), whose sum is σ = 530657600. Its totient is φ = 504197568.

The previous prime is 517399639. The next prime is 517399699. The reversal of 517399693 is 396993715.

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

It is a cyclic number.

It is not a de Polignac number, because 517399693 - 2²⁵ = 483845261 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 517399693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517399699) 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 in 7 ways as a sum of consecutive naturals, for example, 5173 + ... + 32581.

It is an arithmetic number, because the mean of its divisors is an integer number (66332200).

Almost surely, 2^517399693 is an apocalyptic number.

It is an amenable number.

517399693 is a deficient number, since it is larger than the sum of its proper divisors (13257907).

517399693 is a wasteful number, since it uses less digits than its factorization.

517399693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27891.

The product of its digits is 1377810, while the sum is 52.

The square root of 517399693 is about 22746.4215427394. The cubic root of 517399693 is about 802.8025110548.

The spelling of 517399693 in words is "five hundred seventeen million, three hundred ninety-nine thousand, six hundred ninety-three".