11209973 has 2 divisors, whose sum is σ = 11209974. Its totient is φ = 11209972.

The previous prime is 11209969. The next prime is 11210009. The reversal of 11209973 is 37990211.

It is a happy number.

11209973 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7496644 + 3713329 = 2738^2 + 1927^2 .

It is a cyclic number.

It is not a de Polignac number, because 11209973 - 2² = 11209969 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11209963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5604986 + 5604987.

It is an arithmetic number, because the mean of its divisors is an integer number (5604987).

Almost surely, 2^11209973 is an apocalyptic number.

It is an amenable number.

11209973 is a deficient number, since it is larger than the sum of its proper divisors (1).

11209973 is an equidigital number, since it uses as much as digits as its factorization.

11209973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 11209973 is about 3348.1297764573. The cubic root of 11209973 is about 223.8041775531.

The spelling of 11209973 in words is "eleven million, two hundred nine thousand, nine hundred seventy-three".