1996439 has 2 divisors, whose sum is σ = 1996440. Its totient is φ = 1996438.

The previous prime is 1996427. The next prime is 1996453. The reversal of 1996439 is 9346991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1996439 - 2¹² = 1992343 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1996396 and 1996405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1996459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 998219 + 998220.

It is an arithmetic number, because the mean of its divisors is an integer number (998220).

2^1996439 is an apocalyptic number.

1996439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1996439 is an equidigital number, since it uses as much as digits as its factorization.

1996439 is an evil number, because the sum of its binary digits is even.

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

The square root of 1996439 is about 1412.9539978357. The cubic root of 1996439 is about 125.9172842515.

The spelling of 1996439 in words is "one million, nine hundred ninety-six thousand, four hundred thirty-nine".