393731422 has 8 divisors (see below), whose sum is σ = 674968176. Its totient is φ = 168742032.

The previous prime is 393731417. The next prime is 393731449. The reversal of 393731422 is 224137393.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14061823 + ... + 14061850.

It is an arithmetic number, because the mean of its divisors is an integer number (84371022).

Almost surely, 2^393731422 is an apocalyptic number.

393731422 is a deficient number, since it is larger than the sum of its proper divisors (281236754).

393731422 is a wasteful number, since it uses less digits than its factorization.

393731422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28123682.

The product of its digits is 27216, while the sum is 34.

The square root of 393731422 is about 19842.6667058639. Note that the first 3 decimals coincide. The cubic root of 393731422 is about 732.9370768765.

The spelling of 393731422 in words is "three hundred ninety-three million, seven hundred thirty-one thousand, four hundred twenty-two".