394660 has 24 divisors (see below), whose sum is σ = 947520. Its totient is φ = 135264.

The previous prime is 394643. The next prime is 394673. The reversal of 394660 is 66493.

394660 = T₁₂₀ + T₁₂₁ + ... + T₁₅₉.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

394660 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1270 + ... + 1549.

It is an arithmetic number, because the mean of its divisors is an integer number (39480).

2³⁹⁴⁶⁶⁰ is an apocalyptic number.

It is an amenable number.

394660 is an abundant number, since it is smaller than the sum of its proper divisors (552860).

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

394660 is a wasteful number, since it uses less digits than its factorization.

394660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2835 (or 2833 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 394660 is about 628.2197067905. The cubic root of 394660 is about 73.3512811901.

The spelling of 394660 in words is "three hundred ninety-four thousand, six hundred sixty".