14405689 has 2 divisors, whose sum is σ = 14405690. Its totient is φ = 14405688.

The previous prime is 14405627. The next prime is 14405693. The reversal of 14405689 is 98650441.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13213225 + 1192464 = 3635^2 + 1092^2 .

It is a cyclic number.

It is not a de Polignac number, because 14405689 - 2⁷ = 14405561 is a prime.

It is not a weakly prime, because it can be changed into another prime (14405189) 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, 7202844 + 7202845.

It is an arithmetic number, because the mean of its divisors is an integer number (7202845).

Almost surely, 2^14405689 is an apocalyptic number.

It is an amenable number.

14405689 is a deficient number, since it is larger than the sum of its proper divisors (1).

14405689 is an equidigital number, since it uses as much as digits as its factorization.

14405689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 14405689 is about 3795.4827097485. The cubic root of 14405689 is about 243.3201141669.

The spelling of 14405689 in words is "fourteen million, four hundred five thousand, six hundred eighty-nine".