394245 has 12 divisors (see below), whose sum is σ = 683436. Its totient is φ = 210240.

The previous prime is 394241. The next prime is 394249. The reversal of 394245 is 542493.

It is an interprime number because it is at equal distance from previous prime (394241) and next prime (394249).

It can be written as a sum of positive squares in 2 ways, for example, as 79524 + 314721 = 282^2 + 561^2 .

It is not a de Polignac number, because 394245 - 2² = 394241 is a prime.

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 pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4336 + ... + 4425.

It is an arithmetic number, because the mean of its divisors is an integer number (56953).

2³⁹⁴²⁴⁵ is an apocalyptic number.

It is an amenable number.

394245 is a deficient number, since it is larger than the sum of its proper divisors (289191).

394245 is a wasteful number, since it uses less digits than its factorization.

394245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8772 (or 8769 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 394245 is about 627.8893214572. The cubic root of 394245 is about 73.3255616190.

The spelling of 394245 in words is "three hundred ninety-four thousand, two hundred forty-five".