115209449 has 2 divisors, whose sum is σ = 115209450. Its totient is φ = 115209448.

The previous prime is 115209433. The next prime is 115209473. The reversal of 115209449 is 944902511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83083225 + 32126224 = 9115^2 + 5668^2 .

It is a cyclic number.

It is not a de Polignac number, because 115209449 - 2⁴ = 115209433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (115202449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57604724 + 57604725.

It is an arithmetic number, because the mean of its divisors is an integer number (57604725).

Almost surely, 2^115209449 is an apocalyptic number.

It is an amenable number.

115209449 is a deficient number, since it is larger than the sum of its proper divisors (1).

115209449 is an equidigital number, since it uses as much as digits as its factorization.

115209449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 115209449 is about 10733.5664622715. The cubic root of 115209449 is about 486.5894626911.

The spelling of 115209449 in words is "one hundred fifteen million, two hundred nine thousand, four hundred forty-nine".