396145 has 4 divisors (see below), whose sum is σ = 475380. Its totient is φ = 316912.

The previous prime is 396119. The next prime is 396157. The reversal of 396145 is 541693.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 254016 + 142129 = 504^2 + 377^2 .

It is a cyclic number.

It is not a de Polignac number, because 396145 - 2¹³ = 387953 is a prime.

It is a super-2 number, since 2×396145² = 313861722050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39610 + ... + 39619.

It is an arithmetic number, because the mean of its divisors is an integer number (118845).

2³⁹⁶¹⁴⁵ is an apocalyptic number.

It is an amenable number.

396145 is a deficient number, since it is larger than the sum of its proper divisors (79235).

396145 is an equidigital number, since it uses as much as digits as its factorization.

396145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79234.

The product of its digits is 3240, while the sum is 28.

The square root of 396145 is about 629.4005084205. The cubic root of 396145 is about 73.4431664558.

The spelling of 396145 in words is "three hundred ninety-six thousand, one hundred forty-five".