393722 has 8 divisors (see below), whose sum is σ = 674976. Its totient is φ = 168732.

The previous prime is 393721. The next prime is 393727. The reversal of 393722 is 227393.

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

It is a junction number, because it is equal to n+sod(n) for n = 393691 and 393700.

It is not an unprimeable number, because it can be changed into a prime (393721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14048 + ... + 14075.

It is an arithmetic number, because the mean of its divisors is an integer number (84372).

2³⁹³⁷²² is an apocalyptic number.

393722 is a deficient number, since it is larger than the sum of its proper divisors (281254).

393722 is a wasteful number, since it uses less digits than its factorization.

393722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28132.

The product of its digits is 2268, while the sum is 26.

The square root of 393722 is about 627.4727085699. The cubic root of 393722 is about 73.2931230431.

The spelling of 393722 in words is "three hundred ninety-three thousand, seven hundred twenty-two".