11928139 has 2 divisors, whose sum is σ = 11928140. Its totient is φ = 11928138.

The previous prime is 11928113. The next prime is 11928151. The reversal of 11928139 is 93182911.

11928139 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11928139 - 2⁵ = 11928107 is a prime.

It is not a weakly prime, because it can be changed into another prime (11928439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5964069 + 5964070.

It is an arithmetic number, because the mean of its divisors is an integer number (5964070).

Almost surely, 2^11928139 is an apocalyptic number.

11928139 is a deficient number, since it is larger than the sum of its proper divisors (1).

11928139 is an equidigital number, since it uses as much as digits as its factorization.

11928139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 34.

The square root of 11928139 is about 3453.7137982178. The cubic root of 11928139 is about 228.4849315014.

The spelling of 11928139 in words is "eleven million, nine hundred twenty-eight thousand, one hundred thirty-nine".