1996289 has 2 divisors, whose sum is σ = 1996290. Its totient is φ = 1996288.

The previous prime is 1996283. The next prime is 1996297. The reversal of 1996289 is 9826991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1849600 + 146689 = 1360^2 + 383^2 .

It is an emirp because it is prime and its reverse (9826991) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1996289 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1996283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 998144 + 998145.

It is an arithmetic number, because the mean of its divisors is an integer number (998145).

2^1996289 is an apocalyptic number.

It is an amenable number.

1996289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1996289 is an equidigital number, since it uses as much as digits as its factorization.

1996289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 44.

The square root of 1996289 is about 1412.9009165543. The cubic root of 1996289 is about 125.9141306255.

The spelling of 1996289 in words is "one million, nine hundred ninety-six thousand, two hundred eighty-nine".