104257709 has 2 divisors, whose sum is σ = 104257710. Its totient is φ = 104257708.

The previous prime is 104257687. The next prime is 104257759. The reversal of 104257709 is 907752401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79477225 + 24780484 = 8915^2 + 4978^2 .

It is an emirp because it is prime and its reverse (907752401) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104257709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104257759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52128854 + 52128855.

It is an arithmetic number, because the mean of its divisors is an integer number (52128855).

Almost surely, 2^104257709 is an apocalyptic number.

It is an amenable number.

104257709 is a deficient number, since it is larger than the sum of its proper divisors (1).

104257709 is an equidigital number, since it uses as much as digits as its factorization.

104257709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 104257709 is about 10210.6664327065. Note that the first 3 decimals coincide. The cubic root of 104257709 is about 470.6550531094.

The spelling of 104257709 in words is "one hundred four million, two hundred fifty-seven thousand, seven hundred nine".