14139709 has 2 divisors, whose sum is σ = 14139710. Its totient is φ = 14139708.

The previous prime is 14139707. The next prime is 14139731. The reversal of 14139709 is 90793141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8122500 + 6017209 = 2850^2 + 2453^2 .

It is a cyclic number.

It is not a de Polignac number, because 14139709 - 2¹ = 14139707 is a prime.

Together with 14139707, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14139701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7069854 + 7069855.

It is an arithmetic number, because the mean of its divisors is an integer number (7069855).

Almost surely, 2^14139709 is an apocalyptic number.

It is an amenable number.

14139709 is a deficient number, since it is larger than the sum of its proper divisors (1).

14139709 is an equidigital number, since it uses as much as digits as its factorization.

14139709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 14139709 is about 3760.2804416692. The cubic root of 14139709 is about 241.8132851603.

The spelling of 14139709 in words is "fourteen million, one hundred thirty-nine thousand, seven hundred nine".