14638709 has 4 divisors (see below), whose sum is σ = 14844960. Its totient is φ = 14432460.

The previous prime is 14638703. The next prime is 14638753. The reversal of 14638709 is 90783641.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90783641 = 13 ⋅6983357.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14638709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14638703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103019 + ... + 103160.

It is an arithmetic number, because the mean of its divisors is an integer number (3711240).

Almost surely, 2^14638709 is an apocalyptic number.

It is an amenable number.

14638709 is a deficient number, since it is larger than the sum of its proper divisors (206251).

14638709 is an equidigital number, since it uses as much as digits as its factorization.

14638709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206250.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 14638709 is about 3826.0565860949. The cubic root of 14638709 is about 244.6250491207.

The spelling of 14638709 in words is "fourteen million, six hundred thirty-eight thousand, seven hundred nine".