11111139 has 24 divisors (see below), whose sum is σ = 18039840. Its totient is φ = 6538752.

The previous prime is 11111131. The next prime is 11111141. The reversal of 11111139 is 93111111.

11111139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11111139 - 2³ = 11111131 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 627 + ... + 4755.

It is an arithmetic number, because the mean of its divisors is an integer number (751660).

Almost surely, 2^11111139 is an apocalyptic number.

11111139 is a deficient number, since it is larger than the sum of its proper divisors (6928701).

11111139 is a wasteful number, since it uses less digits than its factorization.

11111139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4171 (or 4168 counting only the distinct ones).

The product of its digits is 27, while the sum is 18.

The square root of 11111139 is about 3333.3375166640. The cubic root of 11111139 is about 223.1445033913.

The spelling of 11111139 in words is "eleven million, one hundred eleven thousand, one hundred thirty-nine".