13900709 has 2 divisors, whose sum is σ = 13900710. Its totient is φ = 13900708.

The previous prime is 13900703. The next prime is 13900721. The reversal of 13900709 is 90700931.

13900709 is digitally balanced in base 2, 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., 12623809 + 1276900 = 3553^2 + 1130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13900709 is a prime.

It is a Chen prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13900703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6950354 + 6950355.

It is an arithmetic number, because the mean of its divisors is an integer number (6950355).

Almost surely, 2^13900709 is an apocalyptic number.

It is an amenable number.

13900709 is a deficient number, since it is larger than the sum of its proper divisors (1).

13900709 is an equidigital number, since it uses as much as digits as its factorization.

13900709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1701, while the sum is 29.

The square root of 13900709 is about 3728.3654595546. The cubic root of 13900709 is about 240.4430992500.

The spelling of 13900709 in words is "thirteen million, nine hundred thousand, seven hundred nine".