11909673 has 42 divisors (see below), whose sum is σ = 19536282. Its totient is φ = 7231680.

The previous prime is 11909657. The next prime is 11909693. The reversal of 11909673 is 37690911.

It can be written as a sum of positive squares in only one way, i.e., 11209104 + 700569 = 3348^2 + 837^2 .

It is not a de Polignac number, because 11909673 - 2⁴ = 11909657 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11909693) 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 in 41 ways as a sum of consecutive naturals, for example, 384168 + ... + 384198.

Almost surely, 2^11909673 is an apocalyptic number.

It is an amenable number.

11909673 is a deficient number, since it is larger than the sum of its proper divisors (7626609).

11909673 is an frugal number, since it uses more digits than its factorization.

11909673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 11909673 is about 3451.0394086420. The cubic root of 11909673 is about 228.3669644580.

The spelling of 11909673 in words is "eleven million, nine hundred nine thousand, six hundred seventy-three".