11712439 has 8 divisors (see below), whose sum is σ = 12523680. Its totient is φ = 10914816.

The previous prime is 11712431. The next prime is 11712457. The reversal of 11712439 is 93421711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11712439 - 2³ = 11712431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11712431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1594 + ... + 5095.

It is an arithmetic number, because the mean of its divisors is an integer number (1565460).

Almost surely, 2^11712439 is an apocalyptic number.

11712439 is a deficient number, since it is larger than the sum of its proper divisors (811241).

11712439 is a wasteful number, since it uses less digits than its factorization.

11712439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6809.

The product of its digits is 1512, while the sum is 28.

The square root of 11712439 is about 3422.3440797208. The cubic root of 11712439 is about 227.0992922114.

The spelling of 11712439 in words is "eleven million, seven hundred twelve thousand, four hundred thirty-nine".