11809601 has 2 divisors, whose sum is σ = 11809602. Its totient is φ = 11809600.

The previous prime is 11809597. The next prime is 11809613. The reversal of 11809601 is 10690811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10857025 + 952576 = 3295^2 + 976^2 .

It is a cyclic number.

It is not a de Polignac number, because 11809601 - 2² = 11809597 is a prime.

It is not a weakly prime, because it can be changed into another prime (11809001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5904800 + 5904801.

It is an arithmetic number, because the mean of its divisors is an integer number (5904801).

Almost surely, 2^11809601 is an apocalyptic number.

It is an amenable number.

11809601 is a deficient number, since it is larger than the sum of its proper divisors (1).

11809601 is an equidigital number, since it uses as much as digits as its factorization.

11809601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 11809601 is about 3436.5100028954. The cubic root of 11809601 is about 227.7255405273.

The spelling of 11809601 in words is "eleven million, eight hundred nine thousand, six hundred one".