394407 has 12 divisors (see below), whose sum is σ = 613704. Its totient is φ = 242640.

The previous prime is 394393. The next prime is 394409. The reversal of 394407 is 704493.

It is not a de Polignac number, because 394407 - 2¹⁰ = 393383 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1569 + ... + 1802.

It is an arithmetic number, because the mean of its divisors is an integer number (51142).

2³⁹⁴⁴⁰⁷ is an apocalyptic number.

394407 is a deficient number, since it is larger than the sum of its proper divisors (219297).

394407 is a wasteful number, since it uses less digits than its factorization.

394407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3390 (or 3387 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 394407 is about 628.0183118349. The cubic root of 394407 is about 73.3356036946.

The spelling of 394407 in words is "three hundred ninety-four thousand, four hundred seven".