517388842 has 8 divisors (see below), whose sum is σ = 779502816. Its totient is φ = 257554572.

The previous prime is 517388827. The next prime is 517388843. The reversal of 517388842 is 248883715.

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

It is a super-2 number, since 2×517388842² = 535382427652201928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 517388792 and 517388801.

It is not an unprimeable number, because it can be changed into a prime (517388843) 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 3 ways as a sum of consecutive naturals, for example, 569358 + ... + 570265.

It is an arithmetic number, because the mean of its divisors is an integer number (97437852).

Almost surely, 2^517388842 is an apocalyptic number.

517388842 is a deficient number, since it is larger than the sum of its proper divisors (262113974).

517388842 is a wasteful number, since it uses less digits than its factorization.

517388842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139852.

The product of its digits is 430080, while the sum is 46.

The square root of 517388842 is about 22746.1830204542. The cubic root of 517388842 is about 802.7968988424.

The spelling of 517388842 in words is "five hundred seventeen million, three hundred eighty-eight thousand, eight hundred forty-two".