396049 has 4 divisors (see below), whose sum is σ = 419364. Its totient is φ = 372736.

The previous prime is 396043. The next prime is 396061. The reversal of 396049 is 940693.

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 165649 + 230400 = 407^2 + 480^2 .

It is a cyclic number.

It is not a de Polignac number, because 396049 - 2³ = 396041 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

396049 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 396049.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11632 + ... + 11665.

It is an arithmetic number, because the mean of its divisors is an integer number (104841).

2³⁹⁶⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

396049 is a deficient number, since it is larger than the sum of its proper divisors (23315).

396049 is a wasteful number, since it uses less digits than its factorization.

396049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23314.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 396049 is about 629.3242407535. The cubic root of 396049 is about 73.4372333475.

Subtracting 396049 from its reverse (940693), we obtain a square (544644 = 738²).

The spelling of 396049 in words is "three hundred ninety-six thousand, forty-nine".