11139191 has 4 divisors (see below), whose sum is σ = 12730512. Its totient is φ = 9547872.

The previous prime is 11139179. The next prime is 11139203. The reversal of 11139191 is 19193111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19193111 = 7 ⋅2741873.

It is an interprime number because it is at equal distance from previous prime (11139179) and next prime (11139203).

It is a cyclic number.

It is not a de Polignac number, because 11139191 - 2⁶ = 11139127 is a prime.

It is a super-2 number, since 2×11139191² = 248163152268962, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11139191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11139101) 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, 795650 + ... + 795663.

It is an arithmetic number, because the mean of its divisors is an integer number (3182628).

Almost surely, 2^11139191 is an apocalyptic number.

11139191 is a deficient number, since it is larger than the sum of its proper divisors (1591321).

11139191 is an equidigital number, since it uses as much as digits as its factorization.

11139191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1591320.

The product of its digits is 243, while the sum is 26.

The square root of 11139191 is about 3337.5426589034. The cubic root of 11139191 is about 223.3321345942.

The spelling of 11139191 in words is "eleven million, one hundred thirty-nine thousand, one hundred ninety-one".