393828393 has 8 divisors (see below), whose sum is σ = 600119488. Its totient is φ = 225044784.

The previous prime is 393828361. The next prime is 393828403.

393828393 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 393828393 - 2⁵ = 393828361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (393828893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9376846 + ... + 9376887.

It is an arithmetic number, because the mean of its divisors is an integer number (75014936).

Almost surely, 2^393828393 is an apocalyptic number.

It is an amenable number.

393828393 is a deficient number, since it is larger than the sum of its proper divisors (206291095).

393828393 is a wasteful number, since it uses less digits than its factorization.

393828393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18753743.

The product of its digits is 839808, while the sum is 48.

The square root of 393828393 is about 19845.1100526049. The cubic root of 393828393 is about 732.9972429383.

The spelling of 393828393 in words is "three hundred ninety-three million, eight hundred twenty-eight thousand, three hundred ninety-three".