11993801 has 2 divisors, whose sum is σ = 11993802. Its totient is φ = 11993800.

The previous prime is 11993797. The next prime is 11993843. The reversal of 11993801 is 10839911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11971600 + 22201 = 3460^2 + 149^2 .

It is an emirp because it is prime and its reverse (10839911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11993801 - 2² = 11993797 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11993101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5996900 + 5996901.

It is an arithmetic number, because the mean of its divisors is an integer number (5996901).

Almost surely, 2^11993801 is an apocalyptic number.

It is an amenable number.

11993801 is a deficient number, since it is larger than the sum of its proper divisors (1).

11993801 is an equidigital number, since it uses as much as digits as its factorization.

11993801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 11993801 is about 3463.2067509752. The cubic root of 11993801 is about 228.9034190337.

The spelling of 11993801 in words is "eleven million, nine hundred ninety-three thousand, eight hundred one".