393238 has 8 divisors (see below), whose sum is σ = 596232. Its totient is φ = 194496.

The previous prime is 393209. The next prime is 393241. The reversal of 393238 is 832393.

It is a happy number.

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

It is a super-2 number, since 2×393238² = 309272249288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

393238 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 (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 820 + ... + 1207.

It is an arithmetic number, because the mean of its divisors is an integer number (74529).

2³⁹³²³⁸ is an apocalyptic number.

393238 is a deficient number, since it is larger than the sum of its proper divisors (202994).

393238 is a wasteful number, since it uses less digits than its factorization.

393238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126.

The product of its digits is 3888, while the sum is 28.

The square root of 393238 is about 627.0869158259. The cubic root of 393238 is about 73.2630778018.

The spelling of 393238 in words is "three hundred ninety-three thousand, two hundred thirty-eight".