394308 has 30 divisors (see below), whose sum is σ = 1031646. Its totient is φ = 131328.

The previous prime is 394291. The next prime is 394319. The reversal of 394308 is 803493.

It can be written as a sum of positive squares in only one way, i.e., 311364 + 82944 = 558^2 + 288^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

394308 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 9 ways as a sum of consecutive naturals, for example, 285 + ... + 932.

2³⁹⁴³⁰⁸ is an apocalyptic number.

It is an amenable number.

394308 is an abundant number, since it is smaller than the sum of its proper divisors (637338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

394308 is a wasteful number, since it uses less digits than its factorization.

394308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233 (or 1222 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 394308 is about 627.9394875304. The cubic root of 394308 is about 73.3294671975.

Adding to 394308 its product of nonzero digits (2592), we get a square (396900 = 630²).

The spelling of 394308 in words is "three hundred ninety-four thousand, three hundred eight".