1789993 has 2 divisors, whose sum is σ = 1789994. Its totient is φ = 1789992.

The previous prime is 1789987. The next prime is 1789999. The reversal of 1789993 is 3999871.

It is a balanced prime because it is at equal distance from previous prime (1789987) and next prime (1789999).

It can be written as a sum of positive squares in only one way, i.e., 1192464 + 597529 = 1092^2 + 773^2 .

It is an emirp because it is prime and its reverse (3999871) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1789993 - 2⁹ = 1789481 is a prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (1789999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 894996 + 894997.

It is an arithmetic number, because the mean of its divisors is an integer number (894997).

2^1789993 is an apocalyptic number.

It is an amenable number.

1789993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1789993 is an equidigital number, since it uses as much as digits as its factorization.

1789993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 46.

The square root of 1789993 is about 1337.9062000006. The cubic root of 1789993 is about 121.4181964443.

The spelling of 1789993 in words is "one million, seven hundred eighty-nine thousand, nine hundred ninety-three".