1996443 has 6 divisors (see below), whose sum is σ = 2883764. Its totient is φ = 1330956.

The previous prime is 1996439. The next prime is 1996453. The reversal of 1996443 is 3446991.

1996443 is a `hidden beast` number, since 1 + 9 + 9 + 644 + 3 = 666.

It is not a de Polignac number, because 1996443 - 2² = 1996439 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1996398 and 1996407.

It is not an unprimeable number, because it can be changed into a prime (1996403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 110905 + ... + 110922.

2^1996443 is an apocalyptic number.

1996443 is a deficient number, since it is larger than the sum of its proper divisors (887321).

1996443 is a wasteful number, since it uses less digits than its factorization.

1996443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221833 (or 221830 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 1996443 is about 1412.9554133093. The cubic root of 1996443 is about 125.9173683460.

The spelling of 1996443 in words is "one million, nine hundred ninety-six thousand, four hundred forty-three".