11905849 has 2 divisors, whose sum is σ = 11905850. Its totient is φ = 11905848.

The previous prime is 11905841. The next prime is 11905871. The reversal of 11905849 is 94850911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6350400 + 5555449 = 2520^2 + 2357^2 .

It is an emirp because it is prime and its reverse (94850911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11905849 - 2³ = 11905841 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11905841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5952924 + 5952925.

It is an arithmetic number, because the mean of its divisors is an integer number (5952925).

Almost surely, 2^11905849 is an apocalyptic number.

It is an amenable number.

11905849 is a deficient number, since it is larger than the sum of its proper divisors (1).

11905849 is an equidigital number, since it uses as much as digits as its factorization.

11905849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 11905849 is about 3450.4853281821. The cubic root of 11905849 is about 228.3425202169.

The spelling of 11905849 in words is "eleven million, nine hundred five thousand, eight hundred forty-nine".