11972439 has 12 divisors (see below), whose sum is σ = 17466072. Its totient is φ = 7902000.

The previous prime is 11972407. The next prime is 11972459. The reversal of 11972439 is 93427911.

11972439 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11972439 - 2⁵ = 11972407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11972459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5677 + ... + 7494.

It is an arithmetic number, because the mean of its divisors is an integer number (1455506).

Almost surely, 2^11972439 is an apocalyptic number.

11972439 is a deficient number, since it is larger than the sum of its proper divisors (5493633).

11972439 is a wasteful number, since it uses less digits than its factorization.

11972439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13278 (or 13275 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 11972439 is about 3460.1212406504. The cubic root of 11972439 is about 228.7674393226.

The spelling of 11972439 in words is "eleven million, nine hundred seventy-two thousand, four hundred thirty-nine".