11976609 has 4 divisors (see below), whose sum is σ = 15968816. Its totient is φ = 7984404.

The previous prime is 11976541. The next prime is 11976611. The reversal of 11976609 is 90667911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90667911 = 3 ⋅30222637.

It is not a de Polignac number, because 11976609 - 2¹¹ = 11974561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11976689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1996099 + ... + 1996104.

It is an arithmetic number, because the mean of its divisors is an integer number (3992204).

Almost surely, 2^11976609 is an apocalyptic number.

It is an amenable number.

11976609 is a deficient number, since it is larger than the sum of its proper divisors (3992207).

11976609 is an equidigital number, since it uses as much as digits as its factorization.

11976609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3992206.

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 11976609 is about 3460.7237682311. The cubic root of 11976609 is about 228.7939961361.

The spelling of 11976609 in words is "eleven million, nine hundred seventy-six thousand, six hundred nine".