11943817 has 2 divisors, whose sum is σ = 11943818. Its totient is φ = 11943816.

The previous prime is 11943791. The next prime is 11943821. The reversal of 11943817 is 71834911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11431161 + 512656 = 3381^2 + 716^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11943817 is a prime.

It is not a weakly prime, because it can be changed into another prime (11943017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5971908 + 5971909.

It is an arithmetic number, because the mean of its divisors is an integer number (5971909).

Almost surely, 2^11943817 is an apocalyptic number.

It is an amenable number.

11943817 is a deficient number, since it is larger than the sum of its proper divisors (1).

11943817 is an equidigital number, since it uses as much as digits as its factorization.

11943817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 34.

The square root of 11943817 is about 3455.9827835219. The cubic root of 11943817 is about 228.5849923313.

The spelling of 11943817 in words is "eleven million, nine hundred forty-three thousand, eight hundred seventeen".