11969149 has 6 divisors (see below), whose sum is σ = 12202106. Its totient is φ = 11740560.

The previous prime is 11969147. The next prime is 11969159. The reversal of 11969149 is 94196911.

It can be written as a sum of positive squares in 3 ways, for example, as 7601049 + 4368100 = 2757^2 + 2090^2 .

It is not a de Polignac number, because 11969149 - 2¹ = 11969147 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 (11969147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 679 + ... + 4939.

Almost surely, 2^11969149 is an apocalyptic number.

It is an amenable number.

11969149 is a deficient number, since it is larger than the sum of its proper divisors (232957).

11969149 is an frugal number, since it uses more digits than its factorization.

11969149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4367 (or 4314 counting only the distinct ones).

The product of its digits is 17496, while the sum is 40.

The square root of 11969149 is about 3459.6457911179. The cubic root of 11969149 is about 228.7464824725.

The spelling of 11969149 in words is "eleven million, nine hundred sixty-nine thousand, one hundred forty-nine".