11739139 has 4 divisors (see below), whose sum is σ = 11757256. Its totient is φ = 11721024.

The previous prime is 11739107. The next prime is 11739149. The reversal of 11739139 is 93193711.

11739139 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11739139 - 2⁵ = 11739107 is a prime.

It is a super-2 number, since 2×11739139² = 275614768922642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11739149) 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, 8049 + ... + 9394.

It is an arithmetic number, because the mean of its divisors is an integer number (2939314).

Almost surely, 2^11739139 is an apocalyptic number.

11739139 is a deficient number, since it is larger than the sum of its proper divisors (18117).

11739139 is an equidigital number, since it uses as much as digits as its factorization.

11739139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18116.

The product of its digits is 5103, while the sum is 34.

The square root of 11739139 is about 3426.2426942644. The cubic root of 11739139 is about 227.2717285241.

It can be divided in two parts, 11739 and 139, that multiplied together give a triangular number (1631721 = T₁₈₀₆).

The spelling of 11739139 in words is "eleven million, seven hundred thirty-nine thousand, one hundred thirty-nine".