11139549 has 8 divisors (see below), whose sum is σ = 14871072. Its totient is φ = 7417200.

The previous prime is 11139533. The next prime is 11139563. The reversal of 11139549 is 94593111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11139549 - 2⁴ = 11139533 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11139589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1387 + ... + 4919.

It is an arithmetic number, because the mean of its divisors is an integer number (1858884).

Almost surely, 2^11139549 is an apocalyptic number.

It is an amenable number.

11139549 is a deficient number, since it is larger than the sum of its proper divisors (3731523).

11139549 is a wasteful number, since it uses less digits than its factorization.

11139549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4587.

The product of its digits is 4860, while the sum is 33.

The square root of 11139549 is about 3337.5962907458. The cubic root of 11139549 is about 223.3345271093.

The spelling of 11139549 in words is "eleven million, one hundred thirty-nine thousand, five hundred forty-nine".