13909673 has 2 divisors, whose sum is σ = 13909674. Its totient is φ = 13909672.

The previous prime is 13909661. The next prime is 13909699. The reversal of 13909673 is 37690931.

13909673 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11812969 + 2096704 = 3437^2 + 1448^2 .

It is a cyclic number.

It is not a de Polignac number, because 13909673 - 2⁴ = 13909657 is a prime.

It is not a weakly prime, because it can be changed into another prime (13909633) 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 as a sum of consecutive naturals, namely, 6954836 + 6954837.

It is an arithmetic number, because the mean of its divisors is an integer number (6954837).

Almost surely, 2^13909673 is an apocalyptic number.

It is an amenable number.

13909673 is a deficient number, since it is larger than the sum of its proper divisors (1).

13909673 is an equidigital number, since it uses as much as digits as its factorization.

13909673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618, while the sum is 38.

The square root of 13909673 is about 3729.5674011874. The cubic root of 13909673 is about 240.4947721254.

The spelling of 13909673 in words is "thirteen million, nine hundred nine thousand, six hundred seventy-three".