396140 has 24 divisors (see below), whose sum is σ = 861840. Its totient is φ = 152768.

The previous prime is 396119. The next prime is 396157. The reversal of 396140 is 41693.

396140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239 + ... + 921.

It is an arithmetic number, because the mean of its divisors is an integer number (35910).

2³⁹⁶¹⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 396140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (430920).

396140 is an abundant number, since it is smaller than the sum of its proper divisors (465700).

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

396140 is a wasteful number, since it uses less digits than its factorization.

396140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721 (or 719 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 396140 is about 629.3965363743. The cubic root of 396140 is about 73.4428574634.

It can be divided in two parts, 3 and 96140, that multiplied together give a triangular number (288420 = T₇₅₉).

The spelling of 396140 in words is "three hundred ninety-six thousand, one hundred forty".