12906394 has 4 divisors (see below), whose sum is σ = 19359594. Its totient is φ = 6453196.

The previous prime is 12906379. The next prime is 12906403. The reversal of 12906394 is 49360921.

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

It can be written as a sum of positive squares in only one way, i.e., 7360369 + 5546025 = 2713^2 + 2355^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3226597 + ... + 3226600.

Almost surely, 2^12906394 is an apocalyptic number.

12906394 is a deficient number, since it is larger than the sum of its proper divisors (6453200).

12906394 is an equidigital number, since it uses as much as digits as its factorization.

12906394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6453199.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 12906394 is about 3592.5470073473. The cubic root of 12906394 is about 234.5677522856.

The spelling of 12906394 in words is "twelve million, nine hundred six thousand, three hundred ninety-four".