12889799 has 8 divisors (see below), whose sum is σ = 13965840. Its totient is φ = 11896248.

The previous prime is 12889787. The next prime is 12889819. The reversal of 12889799 is 99798821.

It is not a de Polignac number, because 12889799 - 2⁴ = 12889783 is a prime.

It is a super-2 number, since 2×12889799² = 332293836520802, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12889799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12882799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 737 + ... + 5130.

It is an arithmetic number, because the mean of its divisors is an integer number (1745730).

Almost surely, 2^12889799 is an apocalyptic number.

12889799 is a deficient number, since it is larger than the sum of its proper divisors (1076041).

12889799 is an frugal number, since it uses more digits than its factorization.

12889799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5906 (or 5880 counting only the distinct ones).

The product of its digits is 653184, while the sum is 53.

The square root of 12889799 is about 3590.2366217284. The cubic root of 12889799 is about 234.4671736776.

The spelling of 12889799 in words is "twelve million, eight hundred eighty-nine thousand, seven hundred ninety-nine".