394247 has 8 divisors (see below), whose sum is σ = 477216. Its totient is φ = 317952.

The previous prime is 394241. The next prime is 394249. The reversal of 394247 is 742493.

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

It is a cyclic number.

It is not a de Polignac number, because 394247 - 2¹² = 390151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1538 + ... + 1775.

It is an arithmetic number, because the mean of its divisors is an integer number (59652).

2³⁹⁴²⁴⁷ is an apocalyptic number.

394247 is a deficient number, since it is larger than the sum of its proper divisors (82969).

394247 is a wasteful number, since it uses less digits than its factorization.

394247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3337.

The product of its digits is 6048, while the sum is 29.

The square root of 394247 is about 627.8909140926. The cubic root of 394247 is about 73.3256856120.

The spelling of 394247 in words is "three hundred ninety-four thousand, two hundred forty-seven".