394290 has 48 divisors (see below), whose sum is σ = 1107288. Its totient is φ = 96768.

The previous prime is 394271. The next prime is 394291. The reversal of 394290 is 92493.

It can be written as a sum of positive squares in 4 ways, for example, as 199809 + 194481 = 447^2 + 441^2 .

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

It is not an unprimeable number, because it can be changed into a prime (394291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1002 + ... + 1338.

2³⁹⁴²⁹⁰ is an apocalyptic number.

394290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 394290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (553644).

394290 is an abundant number, since it is smaller than the sum of its proper divisors (712998).

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

394290 is a wasteful number, since it uses less digits than its factorization.

394290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 394290 is about 627.9251547756. The cubic root of 394290 is about 73.3283513604.

The spelling of 394290 in words is "three hundred ninety-four thousand, two hundred ninety".