11091949 has 18 divisors (see below), whose sum is σ = 12742730. Its totient is φ = 9646560.

The previous prime is 11091947. The next prime is 11091959. The reversal of 11091949 is 94919011.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2722500 + 8369449 = 1650^2 + 2893^2 .

It is not a de Polignac number, because 11091949 - 2¹ = 11091947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11091947) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 101707 + ... + 101815.

Almost surely, 2^11091949 is an apocalyptic number.

It is an amenable number.

11091949 is a deficient number, since it is larger than the sum of its proper divisors (1650781).

11091949 is a wasteful number, since it uses less digits than its factorization.

11091949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 34.

The square root of 11091949 is about 3330.4577763425. The cubic root of 11091949 is about 223.0159653956.

The spelling of 11091949 in words is "eleven million, ninety-one thousand, nine hundred forty-nine".