12390430946 has 4 divisors (see below), whose sum is σ = 18585646422. Its totient is φ = 6195215472.

The previous prime is 12390430939. The next prime is 12390430957. The reversal of 12390430946 is 64903409321.

12390430946 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64903409321 = 83 ⋅781968787.

It can be written as a sum of positive squares in only one way, i.e., 7376233225 + 5014197721 = 85885^2 + 70811^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3097607735 + ... + 3097607738.

Almost surely, 2^12390430946 is an apocalyptic number.

12390430946 is a deficient number, since it is larger than the sum of its proper divisors (6195215476).

12390430946 is an equidigital number, since it uses as much as digits as its factorization.

12390430946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6195215475.

The product of its (nonzero) digits is 139968, while the sum is 41.

The spelling of 12390430946 in words is "twelve billion, three hundred ninety million, four hundred thirty thousand, nine hundred forty-six".