11049989 has 4 divisors (see below), whose sum is σ = 11124300. Its totient is φ = 10975680.

The previous prime is 11049979. The next prime is 11049991. The reversal of 11049989 is 98994011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98994011 = 233 ⋅424867.

It can be written as a sum of positive squares in 2 ways, for example, as 4133089 + 6916900 = 2033^2 + 2630^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11049989 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 (11049979) 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, 36932 + ... + 37229.

It is an arithmetic number, because the mean of its divisors is an integer number (2781075).

Almost surely, 2^11049989 is an apocalyptic number.

It is an amenable number.

11049989 is a deficient number, since it is larger than the sum of its proper divisors (74311).

11049989 is an equidigital number, since it uses as much as digits as its factorization.

11049989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74310.

The product of its (nonzero) digits is 23328, while the sum is 41.

The square root of 11049989 is about 3324.1523731622. The cubic root of 11049989 is about 222.7343925582.

The spelling of 11049989 in words is "eleven million, forty-nine thousand, nine hundred eighty-nine".