12907946 has 4 divisors (see below), whose sum is σ = 19361922. Its totient is φ = 6453972.

The previous prime is 12907943. The next prime is 12907949. The reversal of 12907946 is 64970921.

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 (12907943) and next prime (12907949).

It can be written as a sum of positive squares in only one way, i.e., 11055625 + 1852321 = 3325^2 + 1361^2 .

It is not an unprimeable number, because it can be changed into a prime (12907943) 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, 3226985 + ... + 3226988.

Almost surely, 2^12907946 is an apocalyptic number.

12907946 is a deficient number, since it is larger than the sum of its proper divisors (6453976).

12907946 is an equidigital number, since it uses as much as digits as its factorization.

12907946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6453975.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 12907946 is about 3592.7630035949. The cubic root of 12907946 is about 234.5771542032.

The spelling of 12907946 in words is "twelve million, nine hundred seven thousand, nine hundred forty-six".