13926889 has 2 divisors, whose sum is σ = 13926890. Its totient is φ = 13926888.

The previous prime is 13926877. The next prime is 13926907. The reversal of 13926889 is 98862931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12131289 + 1795600 = 3483^2 + 1340^2 .

It is a cyclic number.

It is not a de Polignac number, because 13926889 - 2⁹ = 13926377 is a prime.

It is not a weakly prime, because it can be changed into another prime (13926089) 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, 6963444 + 6963445.

It is an arithmetic number, because the mean of its divisors is an integer number (6963445).

Almost surely, 2^13926889 is an apocalyptic number.

It is an amenable number.

13926889 is a deficient number, since it is larger than the sum of its proper divisors (1).

13926889 is an equidigital number, since it uses as much as digits as its factorization.

13926889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 46.

The square root of 13926889 is about 3731.8747299447. The cubic root of 13926889 is about 240.5939513320.

It can be divided in two parts, 1392 and 6889, that added together give a square (8281 = 91²).

The spelling of 13926889 in words is "thirteen million, nine hundred twenty-six thousand, eight hundred eighty-nine".