12988819 has 2 divisors, whose sum is σ = 12988820. Its totient is φ = 12988818.

The previous prime is 12988793. The next prime is 12988831. The reversal of 12988819 is 91888921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12988819 - 2⁷ = 12988691 is a prime.

It is a super-2 number, since 2×12988819² = 337418838029522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12988849) 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, 6494409 + 6494410.

It is an arithmetic number, because the mean of its divisors is an integer number (6494410).

Almost surely, 2^12988819 is an apocalyptic number.

12988819 is a deficient number, since it is larger than the sum of its proper divisors (1).

12988819 is an equidigital number, since it uses as much as digits as its factorization.

12988819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 46.

The square root of 12988819 is about 3604.0004162042. Note that the first 3 decimals coincide. The cubic root of 12988819 is about 235.0660384799.

The spelling of 12988819 in words is "twelve million, nine hundred eighty-eight thousand, eight hundred nineteen".