394878 has 32 divisors (see below), whose sum is σ = 893952. Its totient is φ = 115200.

The previous prime is 394861. The next prime is 394879. The reversal of 394878 is 878493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394879) by changing a digit.

394878 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1950 + ... + 2142.

It is an arithmetic number, because the mean of its divisors is an integer number (27936).

2³⁹⁴⁸⁷⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446976).

394878 is an abundant number, since it is smaller than the sum of its proper divisors (499074).

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

394878 is a wasteful number, since it uses less digits than its factorization.

394878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240.

The product of its digits is 48384, while the sum is 39.

The square root of 394878 is about 628.3931890146. The cubic root of 394878 is about 73.3647844891.

The spelling of 394878 in words is "three hundred ninety-four thousand, eight hundred seventy-eight".