393926 has 16 divisors (see below), whose sum is σ = 646800. Its totient is φ = 178848.

The previous prime is 393919. The next prime is 393929. The reversal of 393926 is 629393.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 393892 and 393901.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 393926.

It is not an unprimeable number, because it can be changed into a prime (393929) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2765 + ... + 2903.

It is an arithmetic number, because the mean of its divisors is an integer number (40425).

2³⁹³⁹²⁶ is an apocalyptic number.

393926 is a deficient number, since it is larger than the sum of its proper divisors (252874).

393926 is a wasteful number, since it uses less digits than its factorization.

393926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263.

The product of its digits is 8748, while the sum is 32.

The square root of 393926 is about 627.6352443896. The cubic root of 393926 is about 73.3057793636.

The spelling of 393926 in words is "three hundred ninety-three thousand, nine hundred twenty-six".