394723 has 16 divisors (see below), whose sum is σ = 497664. Its totient is φ = 305280.

The previous prime is 394721. The next prime is 394727. The reversal of 394723 is 327493.

It is a cyclic number.

It is not a de Polignac number, because 394723 - 2¹ = 394721 is a prime.

It is a Duffinian number.

Its product of digits (4536) is a multiple of the sum of its prime divisors (162).

It is a junction number, because it is equal to n+sod(n) for n = 394691 and 394700.

It is not an unprimeable number, because it can be changed into a prime (394721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3636 + ... + 3742.

It is an arithmetic number, because the mean of its divisors is an integer number (31104).

2³⁹⁴⁷²³ is an apocalyptic number.

394723 is a deficient number, since it is larger than the sum of its proper divisors (102941).

394723 is a wasteful number, since it uses less digits than its factorization.

394723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162.

The product of its digits is 4536, while the sum is 28.

The square root of 394723 is about 628.2698464832. The cubic root of 394723 is about 73.3551840304.

The spelling of 394723 in words is "three hundred ninety-four thousand, seven hundred twenty-three".