393430 has 8 divisors (see below), whose sum is σ = 708192. Its totient is φ = 157368.

The previous prime is 393413. The next prime is 393451. The reversal of 393430 is 34393.

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

393430 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19662 + ... + 19681.

It is an arithmetic number, because the mean of its divisors is an integer number (88524).

2³⁹³⁴³⁰ is an apocalyptic number.

393430 is a deficient number, since it is larger than the sum of its proper divisors (314762).

393430 is a wasteful number, since it uses less digits than its factorization.

393430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39350.

The product of its (nonzero) digits is 972, while the sum is 22.

The square root of 393430 is about 627.2399859703. The cubic root of 393430 is about 73.2749995237.

The spelling of 393430 in words is "three hundred ninety-three thousand, four hundred thirty".