11996549 has 4 divisors (see below), whose sum is σ = 12003564. Its totient is φ = 11989536.

The previous prime is 11996539. The next prime is 11996557. The reversal of 11996549 is 94569911.

11996549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 94569911 = 2357 ⋅40123.

It can be written as a sum of positive squares in 2 ways, for example, as 4072324 + 7924225 = 2018^2 + 2815^2 .

It is a cyclic number.

It is not a de Polignac number, because 11996549 - 2⁴ = 11996533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11996539) 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, 929 + ... + 4985.

It is an arithmetic number, because the mean of its divisors is an integer number (3000891).

Almost surely, 2^11996549 is an apocalyptic number.

It is an amenable number.

11996549 is a deficient number, since it is larger than the sum of its proper divisors (7015).

11996549 is an equidigital number, since it uses as much as digits as its factorization.

11996549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7014.

The product of its digits is 87480, while the sum is 44.

The square root of 11996549 is about 3463.6034703759. The cubic root of 11996549 is about 228.9208996907.

The spelling of 11996549 in words is "eleven million, nine hundred ninety-six thousand, five hundred forty-nine".