1285799 has 2 divisors, whose sum is σ = 1285800. Its totient is φ = 1285798.

The previous prime is 1285793. The next prime is 1285811. The reversal of 1285799 is 9975821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1285799 - 2¹² = 1281703 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1285793) 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, 642899 + 642900.

It is an arithmetic number, because the mean of its divisors is an integer number (642900).

2^1285799 is an apocalyptic number.

1285799 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285799 is an equidigital number, since it uses as much as digits as its factorization.

1285799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 41.

The square root of 1285799 is about 1133.9307739011. The cubic root of 1285799 is about 108.7404254573.

The spelling of 1285799 in words is "one million, two hundred eighty-five thousand, seven hundred ninety-nine".