396449143 has 4 divisors (see below), whose sum is σ = 403168680. Its totient is φ = 389729608.

The previous prime is 396449107. The next prime is 396449147. The reversal of 396449143 is 341944693.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-396449143 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 396449143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396449147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3359680 + ... + 3359797.

It is an arithmetic number, because the mean of its divisors is an integer number (100792170).

Almost surely, 2^396449143 is an apocalyptic number.

396449143 is a deficient number, since it is larger than the sum of its proper divisors (6719537).

396449143 is an equidigital number, since it uses as much as digits as its factorization.

396449143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6719536.

The product of its digits is 279936, while the sum is 43.

The square root of 396449143 is about 19911.0306865315. The cubic root of 396449143 is about 734.6195714344.

The spelling of 396449143 in words is "three hundred ninety-six million, four hundred forty-nine thousand, one hundred forty-three".