396251 has 4 divisors (see below), whose sum is σ = 401904. Its totient is φ = 390600.

The previous prime is 396247. The next prime is 396259. The reversal of 396251 is 152693.

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

It is a cyclic number.

It is not a de Polignac number, because 396251 - 2² = 396247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 396251.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 396251.

It is not an unprimeable number, because it can be changed into a prime (396259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2720 + ... + 2861.

It is an arithmetic number, because the mean of its divisors is an integer number (100476).

2³⁹⁶²⁵¹ is an apocalyptic number.

396251 is a deficient number, since it is larger than the sum of its proper divisors (5653).

396251 is an equidigital number, since it uses as much as digits as its factorization.

396251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5652.

The product of its digits is 1620, while the sum is 26.

The square root of 396251 is about 629.4847099017. The cubic root of 396251 is about 73.4497164828.

The spelling of 396251 in words is "three hundred ninety-six thousand, two hundred fifty-one".