11928239 has 4 divisors (see below), whose sum is σ = 11936856. Its totient is φ = 11919624.

The previous prime is 11928229. The next prime is 11928299. The reversal of 11928239 is 93282911.

11928239 is digitally balanced in base 2, 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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 93282911 = 4271 ⋅21841.

It is a cyclic number.

It is not a de Polignac number, because 11928239 - 2⁸ = 11927983 is a prime.

It is a super-2 number, since 2×11928239² = 284565771282242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11928199 and 11928208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11928209) 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, 1709 + ... + 5174.

It is an arithmetic number, because the mean of its divisors is an integer number (2984214).

Almost surely, 2^11928239 is an apocalyptic number.

11928239 is a deficient number, since it is larger than the sum of its proper divisors (8617).

11928239 is an equidigital number, since it uses as much as digits as its factorization.

11928239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8616.

The product of its digits is 7776, while the sum is 35.

The square root of 11928239 is about 3453.7282753569. The cubic root of 11928239 is about 228.4855700036.

It can be divided in two parts, 11928 and 239, that added together give a cube (12167 = 23³).

The spelling of 11928239 in words is "eleven million, nine hundred twenty-eight thousand, two hundred thirty-nine".