11043649 has 4 divisors (see below), whose sum is σ = 11342164. Its totient is φ = 10745136.

The previous prime is 11043631. The next prime is 11043661. The reversal of 11043649 is 94634011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94634011 = 409 ⋅231379.

It can be written as a sum of positive squares in 2 ways, for example, as 10608049 + 435600 = 3257^2 + 660^2 .

It is a cyclic number.

It is not a de Polignac number, because 11043649 - 2¹¹ = 11041601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11043619) 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, 149202 + ... + 149275.

It is an arithmetic number, because the mean of its divisors is an integer number (2835541).

Almost surely, 2^11043649 is an apocalyptic number.

It is an amenable number.

11043649 is a deficient number, since it is larger than the sum of its proper divisors (298515).

11043649 is an equidigital number, since it uses as much as digits as its factorization.

11043649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298514.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 11043649 is about 3323.1986097734. The cubic root of 11043649 is about 222.6917859937.

It can be divided in two parts, 1104 and 3649, that added together give a triangular number (4753 = T₉₇).

The spelling of 11043649 in words is "eleven million, forty-three thousand, six hundred forty-nine".