1139111 has 4 divisors (see below), whose sum is σ = 1152000. Its totient is φ = 1126224.

The previous prime is 1139087. The next prime is 1139123. The reversal of 1139111 is 1119311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1119311 = 863 ⋅1297.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1139111 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 1139111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139141) 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, 6311 + ... + 6488.

It is an arithmetic number, because the mean of its divisors is an integer number (288000).

2^1139111 is an apocalyptic number.

1139111 is a deficient number, since it is larger than the sum of its proper divisors (12889).

1139111 is an equidigital number, since it uses as much as digits as its factorization.

1139111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12888.

The product of its digits is 27, while the sum is 17.

The square root of 1139111 is about 1067.2914316156. The cubic root of 1139111 is about 104.4372309875.

The spelling of 1139111 in words is "one million, one hundred thirty-nine thousand, one hundred eleven".