394740 has 96 divisors (see below), whose sum is σ = 1330560. Its totient is φ = 96768.

The previous prime is 394739. The next prime is 394747. The reversal of 394740 is 47493.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394747) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9159 + ... + 9201.

It is an arithmetic number, because the mean of its divisors is an integer number (13860).

2³⁹⁴⁷⁴⁰ is an apocalyptic number.

394740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (665280).

394740 is an abundant number, since it is smaller than the sum of its proper divisors (935820).

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

394740 is a wasteful number, since it uses less digits than its factorization.

394740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 70 counting only the distinct ones).

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

The square root of 394740 is about 628.2833755560. The cubic root of 394740 is about 73.3562371066.

The spelling of 394740 in words is "three hundred ninety-four thousand, seven hundred forty".