11661449 has 2 divisors, whose sum is σ = 11661450. Its totient is φ = 11661448.

The previous prime is 11661407. The next prime is 11661467. The reversal of 11661449 is 94416611.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11526025 + 135424 = 3395^2 + 368^2 .

It is an emirp because it is prime and its reverse (94416611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11661449 - 2¹² = 11657353 is a prime.

It is not a weakly prime, because it can be changed into another prime (11601449) 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, 5830724 + 5830725.

It is an arithmetic number, because the mean of its divisors is an integer number (5830725).

Almost surely, 2^11661449 is an apocalyptic number.

It is an amenable number.

11661449 is a deficient number, since it is larger than the sum of its proper divisors (1).

11661449 is an equidigital number, since it uses as much as digits as its factorization.

11661449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 32.

The square root of 11661449 is about 3414.8863817117. The cubic root of 11661449 is about 226.7692545524.

The spelling of 11661449 in words is "eleven million, six hundred sixty-one thousand, four hundred forty-nine".