12959138 has 4 divisors (see below), whose sum is σ = 19438710. Its totient is φ = 6479568.

The previous prime is 12959131. The next prime is 12959153. The reversal of 12959138 is 83195921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83195921 = 311 ⋅267511.

It can be written as a sum of positive squares in only one way, i.e., 11404129 + 1555009 = 3377^2 + 1247^2 .

It is not an unprimeable number, because it can be changed into a prime (12959131) 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 as a sum of consecutive naturals, namely, 3239783 + ... + 3239786.

Almost surely, 2^12959138 is an apocalyptic number.

12959138 is a deficient number, since it is larger than the sum of its proper divisors (6479572).

12959138 is an equidigital number, since it uses as much as digits as its factorization.

12959138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6479571.

The product of its digits is 19440, while the sum is 38.

The square root of 12959138 is about 3599.8802757870. The cubic root of 12959138 is about 234.8868506141.

It can be divided in two parts, 1295913 and 8, that added together give a palindrome (1295921).

The spelling of 12959138 in words is "twelve million, nine hundred fifty-nine thousand, one hundred thirty-eight".