17869979479 has 8 divisors (see below), whose sum is σ = 19496993040. Its totient is φ = 16243377600.

The previous prime is 17869979453. The next prime is 17869979497. The reversal of 17869979479 is 97497996871.

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-17869979479 is a prime.

It is a super-2 number, since 2×17869979479² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17869979779) 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, 8374 + ... + 189235.

It is an arithmetic number, because the mean of its divisors is an integer number (2437124130).

Almost surely, 2^17869979479 is an apocalyptic number.

17869979479 is a deficient number, since it is larger than the sum of its proper divisors (1627013561).

17869979479 is a wasteful number, since it uses less digits than its factorization.

17869979479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205841.

The product of its digits is 432081216, while the sum is 76.

The spelling of 17869979479 in words is "seventeen billion, eight hundred sixty-nine million, nine hundred seventy-nine thousand, four hundred seventy-nine".