12789811 has 2 divisors, whose sum is σ = 12789812. Its totient is φ = 12789810.

The previous prime is 12789773. The next prime is 12789823. The reversal of 12789811 is 11898721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12789811 - 2⁷ = 12789683 is a prime.

It is not a weakly prime, because it can be changed into another prime (12789871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6394905 + 6394906.

It is an arithmetic number, because the mean of its divisors is an integer number (6394906).

Almost surely, 2^12789811 is an apocalyptic number.

12789811 is a deficient number, since it is larger than the sum of its proper divisors (1).

12789811 is an equidigital number, since it uses as much as digits as its factorization.

12789811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 37.

The square root of 12789811 is about 3576.2845244751. The cubic root of 12789811 is about 233.8593342124.

The spelling of 12789811 in words is "twelve million, seven hundred eighty-nine thousand, eight hundred eleven".