113569409 has 2 divisors, whose sum is σ = 113569410. Its totient is φ = 113569408.

The previous prime is 113569397. The next prime is 113569433. The reversal of 113569409 is 904965311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69639025 + 43930384 = 8345^2 + 6628^2 .

It is an emirp because it is prime and its reverse (904965311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113569409 - 2⁸ = 113569153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (113569459) 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, 56784704 + 56784705.

It is an arithmetic number, because the mean of its divisors is an integer number (56784705).

Almost surely, 2^113569409 is an apocalyptic number.

It is an amenable number.

113569409 is a deficient number, since it is larger than the sum of its proper divisors (1).

113569409 is an equidigital number, since it uses as much as digits as its factorization.

113569409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 113569409 is about 10656.8949042392. The cubic root of 113569409 is about 484.2695050392.

The spelling of 113569409 in words is "one hundred thirteen million, five hundred sixty-nine thousand, four hundred nine".