393994353 has 8 divisors (see below), whose sum is σ = 526125600. Its totient is φ = 262263008.

The previous prime is 393994351. The next prime is 393994361. The reversal of 393994353 is 353499393.

It is a happy number.

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 393994353 - 2¹ = 393994351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (393994351) 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, 97668 + ... + 101621.

It is an arithmetic number, because the mean of its divisors is an integer number (65765700).

Almost surely, 2^393994353 is an apocalyptic number.

It is an amenable number.

393994353 is a deficient number, since it is larger than the sum of its proper divisors (132131247).

393994353 is a wasteful number, since it uses less digits than its factorization.

393994353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199951.

The product of its digits is 1180980, while the sum is 48.

The square root of 393994353 is about 19849.2909948945. The cubic root of 393994353 is about 733.1001906020.

The spelling of 393994353 in words is "three hundred ninety-three million, nine hundred ninety-four thousand, three hundred fifty-three".