11728439 has 2 divisors, whose sum is σ = 11728440. Its totient is φ = 11728438.

The previous prime is 11728411. The next prime is 11728523. The reversal of 11728439 is 93482711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11728439 - 2²⁰ = 10679863 is a prime.

It is a super-4 number, since 4×11728439⁴ (a number of 29 digits) contains 4444 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11728399 and 11728408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11728939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5864219 + 5864220.

It is an arithmetic number, because the mean of its divisors is an integer number (5864220).

Almost surely, 2^11728439 is an apocalyptic number.

11728439 is a deficient number, since it is larger than the sum of its proper divisors (1).

11728439 is an equidigital number, since it uses as much as digits as its factorization.

11728439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 35.

The square root of 11728439 is about 3424.6808610438. The cubic root of 11728439 is about 227.2026562603.

It can be divided in two parts, 11728 and 439, that added together give a cube (12167 = 23³).

The spelling of 11728439 in words is "eleven million, seven hundred twenty-eight thousand, four hundred thirty-nine".