396040 has 16 divisors (see below), whose sum is σ = 891180. Its totient is φ = 158400.

The previous prime is 396031. The next prime is 396041. The reversal of 396040 is 40693.

It can be written as a sum of positive squares in 2 ways, for example, as 376996 + 19044 = 614^2 + 138^2 .

It is not an unprimeable number, because it can be changed into a prime (396041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4911 + ... + 4990.

2³⁹⁶⁰⁴⁰ is an apocalyptic number.

It is an amenable number.

396040 is an abundant number, since it is smaller than the sum of its proper divisors (495140).

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

396040 is a wasteful number, since it uses less digits than its factorization.

396040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9912 (or 9908 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 396040 is about 629.3170901859. The cubic root of 396040 is about 73.4366770694.

The spelling of 396040 in words is "three hundred ninety-six thousand, forty".