13903709 has 2 divisors, whose sum is σ = 13903710. Its totient is φ = 13903708.

The previous prime is 13903699. The next prime is 13903727. The reversal of 13903709 is 90730931.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12581209 + 1322500 = 3547^2 + 1150^2 .

It is a cyclic number.

It is not a de Polignac number, because 13903709 - 2⁴ = 13903693 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13900709) 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, 6951854 + 6951855.

It is an arithmetic number, because the mean of its divisors is an integer number (6951855).

Almost surely, 2^13903709 is an apocalyptic number.

It is an amenable number.

13903709 is a deficient number, since it is larger than the sum of its proper divisors (1).

13903709 is an equidigital number, since it uses as much as digits as its factorization.

13903709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 13903709 is about 3728.7677589252. The cubic root of 13903709 is about 240.4603951882.

The spelling of 13903709 in words is "thirteen million, nine hundred three thousand, seven hundred nine".