396942 has 32 divisors (see below), whose sum is σ = 978432. Its totient is φ = 104544.

The previous prime is 396937. The next prime is 396943. The reversal of 396942 is 249693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183 + ... + 909.

It is an arithmetic number, because the mean of its divisors is an integer number (30576).

2³⁹⁶⁹⁴² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 396942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (489216).

396942 is an abundant number, since it is smaller than the sum of its proper divisors (581490).

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

396942 is a wasteful number, since it uses less digits than its factorization.

396942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752.

The product of its digits is 11664, while the sum is 33.

The square root of 396942 is about 630.0333324515. The cubic root of 396942 is about 73.4923866426.

The spelling of 396942 in words is "three hundred ninety-six thousand, nine hundred forty-two".