115449409 has 2 divisors, whose sum is σ = 115449410. Its totient is φ = 115449408.

The previous prime is 115449379. The next prime is 115449419. The reversal of 115449409 is 904944511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87834384 + 27615025 = 9372^2 + 5255^2 .

It is an emirp because it is prime and its reverse (904944511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115449409 - 2⁹ = 115448897 is a prime.

It is equal to p_6596821 and since 115449409 and 6596821 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (115449419) 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, 57724704 + 57724705.

It is an arithmetic number, because the mean of its divisors is an integer number (57724705).

Almost surely, 2^115449409 is an apocalyptic number.

It is an amenable number.

115449409 is a deficient number, since it is larger than the sum of its proper divisors (1).

115449409 is an equidigital number, since it uses as much as digits as its factorization.

115449409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 115449409 is about 10744.7386659704. The cubic root of 115449409 is about 486.9270537411.

The spelling of 115449409 in words is "one hundred fifteen million, four hundred forty-nine thousand, four hundred nine".