2399993 has 2 divisors, whose sum is σ = 2399994. Its totient is φ = 2399992.

The previous prime is 2399983. The next prime is 2400001. The reversal of 2399993 is 3999932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2199289 + 200704 = 1483^2 + 448^2 .

It is a cyclic number.

It is not a de Polignac number, because 2399993 - 2⁴ = 2399977 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2399933) 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, 1199996 + 1199997.

It is an arithmetic number, because the mean of its divisors is an integer number (1199997).

2^2399993 is an apocalyptic number.

It is an amenable number.

2399993 is a deficient number, since it is larger than the sum of its proper divisors (1).

2399993 is an equidigital number, since it uses as much as digits as its factorization.

2399993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 118098, while the sum is 44.

The square root of 2399993 is about 1549.1910792410. The cubic root of 2399993 is about 133.8864598488.

The spelling of 2399993 in words is "two million, three hundred ninety-nine thousand, nine hundred ninety-three".