12890723 has 2 divisors, whose sum is σ = 12890724. Its totient is φ = 12890722.

The previous prime is 12890711. The next prime is 12890729. The reversal of 12890723 is 32709821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12890723 - 2⁴ = 12890707 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12890723.

It is not a weakly prime, because it can be changed into another prime (12890729) by changing a digit.

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, 6445361 + 6445362.

It is an arithmetic number, because the mean of its divisors is an integer number (6445362).

Almost surely, 2^12890723 is an apocalyptic number.

12890723 is a deficient number, since it is larger than the sum of its proper divisors (1).

12890723 is an equidigital number, since it uses as much as digits as its factorization.

12890723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 12890723 is about 3590.3653017486. The cubic root of 12890723 is about 234.4727761050.

The spelling of 12890723 in words is "twelve million, eight hundred ninety thousand, seven hundred twenty-three".