443997 has 6 divisors (see below), whose sum is σ = 641342. Its totient is φ = 295992.

The previous prime is 443987. The next prime is 443999. The reversal of 443997 is 799344.

It can be written as a sum of positive squares in only one way, i.e., 443556 + 441 = 666^2 + 21^2 .

It is not a de Polignac number, because 443997 - 2⁷ = 443869 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 443997.

It is not an unprimeable number, because it can be changed into a prime (443999) 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 5 ways as a sum of consecutive naturals, for example, 24658 + ... + 24675.

2⁴⁴³⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

443997 is a deficient number, since it is larger than the sum of its proper divisors (197345).

443997 is a wasteful number, since it uses less digits than its factorization.

443997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49339 (or 49336 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 443997 is about 666.3309988287. The cubic root of 443997 is about 76.2886644364.

The spelling of 443997 in words is "four hundred forty-three thousand, nine hundred ninety-seven".