12009626 has 4 divisors (see below), whose sum is σ = 18014442. Its totient is φ = 6004812.

The previous prime is 12009623. The next prime is 12009629. The reversal of 12009626 is 62690021.

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

It is an interprime number because it is at equal distance from previous prime (12009623) and next prime (12009629).

It can be written as a sum of positive squares in only one way, i.e., 10896601 + 1113025 = 3301^2 + 1055^2 .

It is a super-2 number, since 2×12009626² = 288462233319752, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12009595 and 12009604.

It is not an unprimeable number, because it can be changed into a prime (12009623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3002405 + ... + 3002408.

Almost surely, 2^12009626 is an apocalyptic number.

12009626 is a deficient number, since it is larger than the sum of its proper divisors (6004816).

12009626 is an equidigital number, since it uses as much as digits as its factorization.

12009626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6004815.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 12009626 is about 3465.4907300410. The cubic root of 12009626 is about 229.0040489232.

Adding to 12009626 its reverse (62690021), we get a palindrome (74699647).

The spelling of 12009626 in words is "twelve million, nine thousand, six hundred twenty-six".