393924689998 has 16 divisors (see below), whose sum is σ = 677212506720. Its totient is φ = 168346607616.

The previous prime is 393924689957. The next prime is 393924690011. The reversal of 393924689998 is 899986429393.

It is a super-2 number, since 2×393924689998² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39849843 + ... + 39859726.

It is an arithmetic number, because the mean of its divisors is an integer number (42325781670).

Almost surely, 2^393924689998 is an apocalyptic number.

393924689998 is a deficient number, since it is larger than the sum of its proper divisors (283287816722).

393924689998 is a wasteful number, since it uses less digits than its factorization.

393924689998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79709931.

The product of its digits is 1632586752, while the sum is 79.

The spelling of 393924689998 in words is "three hundred ninety-three billion, nine hundred twenty-four million, six hundred eighty-nine thousand, nine hundred ninety-eight".