1799843 has 2 divisors, whose sum is σ = 1799844. Its totient is φ = 1799842.

The previous prime is 1799839. The next prime is 1799849. The reversal of 1799843 is 3489971.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1799843 - 2² = 1799839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1799843.

It is not a weakly prime, because it can be changed into another prime (1799849) 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 as a sum of consecutive naturals, namely, 899921 + 899922.

It is an arithmetic number, because the mean of its divisors is an integer number (899922).

2^1799843 is an apocalyptic number.

1799843 is a deficient number, since it is larger than the sum of its proper divisors (1).

1799843 is an equidigital number, since it uses as much as digits as its factorization.

1799843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 1799843 is about 1341.5822747786. The cubic root of 1799843 is about 121.6405031208.

The spelling of 1799843 in words is "one million, seven hundred ninety-nine thousand, eight hundred forty-three".