12057439 has 4 divisors (see below), whose sum is σ = 12164256. Its totient is φ = 11950624.

The previous prime is 12057431. The next prime is 12057467. The reversal of 12057439 is 93475021.

12057439 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, and also an emirpimes, since its reverse is a distinct semiprime: 93475021 = 109 ⋅857569.

It is a cyclic number.

It is not a de Polignac number, because 12057439 - 2³ = 12057431 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12057439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12057431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53239 + ... + 53464.

It is an arithmetic number, because the mean of its divisors is an integer number (3041064).

Almost surely, 2^12057439 is an apocalyptic number.

12057439 is a deficient number, since it is larger than the sum of its proper divisors (106817).

12057439 is a wasteful number, since it uses less digits than its factorization.

12057439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106816.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 12057439 is about 3472.3823234200. The cubic root of 12057439 is about 229.3075519081.

The spelling of 12057439 in words is "twelve million, fifty-seven thousand, four hundred thirty-nine".