12957946 has 4 divisors (see below), whose sum is σ = 19436922. Its totient is φ = 6478972.

The previous prime is 12957929. The next prime is 12957949. The reversal of 12957946 is 64975921.

It is a happy number.

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., 11148921 + 1809025 = 3339^2 + 1345^2 .

It is not an unprimeable number, because it can be changed into a prime (12957949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3239485 + ... + 3239488.

Almost surely, 2^12957946 is an apocalyptic number.

12957946 is a deficient number, since it is larger than the sum of its proper divisors (6478976).

12957946 is an equidigital number, since it uses as much as digits as its factorization.

12957946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6478975.

The product of its digits is 136080, while the sum is 43.

The square root of 12957946 is about 3599.7147109181. The cubic root of 12957946 is about 234.8796486507.

The spelling of 12957946 in words is "twelve million, nine hundred fifty-seven thousand, nine hundred forty-six".