12819959 has 2 divisors, whose sum is σ = 12819960. Its totient is φ = 12819958.

The previous prime is 12819953. The next prime is 12819967. The reversal of 12819959 is 95991821.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12819959 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12819953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6409979 + 6409980.

It is an arithmetic number, because the mean of its divisors is an integer number (6409980).

Almost surely, 2^12819959 is an apocalyptic number.

12819959 is a deficient number, since it is larger than the sum of its proper divisors (1).

12819959 is an equidigital number, since it uses as much as digits as its factorization.

12819959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 44.

The square root of 12819959 is about 3580.4970325361. The cubic root of 12819959 is about 234.0429402289.

The spelling of 12819959 in words is "twelve million, eight hundred nineteen thousand, nine hundred fifty-nine".