396401 has 4 divisors (see below), whose sum is σ = 410100. Its totient is φ = 382704.

The previous prime is 396379. The next prime is 396413. The reversal of 396401 is 104693.

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 255025 + 141376 = 505^2 + 376^2 .

It is a cyclic number.

It is not a de Polignac number, because 396401 - 2¹⁰ = 395377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396001) 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, 6806 + ... + 6863.

It is an arithmetic number, because the mean of its divisors is an integer number (102525).

2³⁹⁶⁴⁰¹ is an apocalyptic number.

It is an amenable number.

396401 is a deficient number, since it is larger than the sum of its proper divisors (13699).

396401 is a wasteful number, since it uses less digits than its factorization.

396401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13698.

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

The square root of 396401 is about 629.6038436986. The cubic root of 396401 is about 73.4589833932.

It can be divided in two parts, 396 and 401, that added together give a palindrome (797).

The spelling of 396401 in words is "three hundred ninety-six thousand, four hundred one".