12013959 has 4 divisors (see below), whose sum is σ = 16018616. Its totient is φ = 8009304.

The previous prime is 12013949. The next prime is 12013973. The reversal of 12013959 is 95931021.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12013959 - 2⁹ = 12013447 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 (12013919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2002324 + ... + 2002329.

It is an arithmetic number, because the mean of its divisors is an integer number (4004654).

Almost surely, 2^12013959 is an apocalyptic number.

12013959 is a deficient number, since it is larger than the sum of its proper divisors (4004657).

12013959 is an equidigital number, since it uses as much as digits as its factorization.

12013959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4004656.

The product of its (nonzero) digits is 2430, while the sum is 30.

The square root of 12013959 is about 3466.1158376488. The cubic root of 12013959 is about 229.0315867008.

The spelling of 12013959 in words is "twelve million, thirteen thousand, nine hundred fifty-nine".