394383 has 32 divisors (see below), whose sum is σ = 656640. Its totient is φ = 207360.

The previous prime is 394369. The next prime is 394393. The reversal of 394383 is 383493.

It is a happy number.

It is a Cunningham number, because it is equal to 628²-1.

It is not a de Polignac number, because 394383 - 2⁴ = 394367 is a prime.

394383 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 394383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394363) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10641 + ... + 10677.

It is an arithmetic number, because the mean of its divisors is an integer number (20520).

2³⁹⁴³⁸³ is an apocalyptic number.

394383 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

394383 is a deficient number, since it is larger than the sum of its proper divisors (262257).

394383 is a wasteful number, since it uses less digits than its factorization.

394383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87.

The product of its digits is 7776, while the sum is 30.

The square root of 394383 is about 627.9992038212. Note that the first 3 decimals coincide. The cubic root of 394383 is about 73.3341161533.

It can be divided in two parts, 394 and 383, that added together give a palindrome (777).

The spelling of 394383 in words is "three hundred ninety-four thousand, three hundred eighty-three".