12017939 has 4 divisors (see below), whose sum is σ = 12097680. Its totient is φ = 11938200.

The previous prime is 12017921. The next prime is 12017953. The reversal of 12017939 is 93971021.

It is a happy number.

12017939 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.

It is a cyclic number.

It is not a de Polignac number, because 12017939 - 2¹⁶ = 11952403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12017959) 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, 39644 + ... + 39945.

It is an arithmetic number, because the mean of its divisors is an integer number (3024420).

Almost surely, 2^12017939 is an apocalyptic number.

12017939 is a deficient number, since it is larger than the sum of its proper divisors (79741).

12017939 is an equidigital number, since it uses as much as digits as its factorization.

12017939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79740.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 12017939 is about 3466.6899197938. The cubic root of 12017939 is about 229.0568752027.

The spelling of 12017939 in words is "twelve million, seventeen thousand, nine hundred thirty-nine".