1996943 has 4 divisors (see below), whose sum is σ = 2150568. Its totient is φ = 1843320.

The previous prime is 1996937. The next prime is 1996949. The reversal of 1996943 is 3496991.

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

It is an interprime number because it is at equal distance from previous prime (1996937) and next prime (1996949).

It is a cyclic number.

It is not a de Polignac number, because 1996943 - 2⁶ = 1996879 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 1996943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1996949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76793 + ... + 76818.

It is an arithmetic number, because the mean of its divisors is an integer number (537642).

2^1996943 is an apocalyptic number.

1996943 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1996943 is a deficient number, since it is larger than the sum of its proper divisors (153625).

1996943 is a wasteful number, since it uses less digits than its factorization.

1996943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153624.

The product of its digits is 52488, while the sum is 41.

The square root of 1996943 is about 1413.1323363366. The cubic root of 1996943 is about 125.9278792779.

The spelling of 1996943 in words is "one million, nine hundred ninety-six thousand, nine hundred forty-three".