396090 has 48 divisors (see below), whose sum is σ = 1074528. Its totient is φ = 104976.

The previous prime is 396079. The next prime is 396091. The reversal of 396090 is 90693.

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

It is a nialpdrome in base 9.

It is a zygodrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (396091) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2349 + ... + 2511.

It is an arithmetic number, because the mean of its divisors is an integer number (22386).

2³⁹⁶⁰⁹⁰ is an apocalyptic number.

396090 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 396090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (537264).

396090 is an abundant number, since it is smaller than the sum of its proper divisors (678438).

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

396090 is a wasteful number, since it uses less digits than its factorization.

396090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 396090 is about 629.3568145337. The cubic root of 396090 is about 73.4397673964.

The spelling of 396090 in words is "three hundred ninety-six thousand, ninety".