12909602 has 4 divisors (see below), whose sum is σ = 19364406. Its totient is φ = 6454800.

The previous prime is 12909593. The next prime is 12909623. The reversal of 12909602 is 20690921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20690921 = 17 ⋅1217113.

It can be written as a sum of positive squares in only one way, i.e., 8579041 + 4330561 = 2929^2 + 2081^2 .

It is an unprimeable number.

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, 3227399 + ... + 3227402.

Almost surely, 2^12909602 is an apocalyptic number.

12909602 is a deficient number, since it is larger than the sum of its proper divisors (6454804).

12909602 is an equidigital number, since it uses as much as digits as its factorization.

12909602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6454803.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 12909602 is about 3592.9934594986. The cubic root of 12909602 is about 234.5871853152.

The spelling of 12909602 in words is "twelve million, nine hundred nine thousand, six hundred two".