115421849 has 2 divisors, whose sum is σ = 115421850. Its totient is φ = 115421848.

The previous prime is 115421749. The next prime is 115421851. The reversal of 115421849 is 948124511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114340249 + 1081600 = 10693^2 + 1040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115421849 is a prime.

Together with 115421851, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (115421149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57710924 + 57710925.

It is an arithmetic number, because the mean of its divisors is an integer number (57710925).

Almost surely, 2^115421849 is an apocalyptic number.

It is an amenable number.

115421849 is a deficient number, since it is larger than the sum of its proper divisors (1).

115421849 is an equidigital number, since it uses as much as digits as its factorization.

115421849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 35.

The square root of 115421849 is about 10743.4561012739. The cubic root of 115421849 is about 486.8883043654. Note that the first 3 decimals are identical.

The spelling of 115421849 in words is "one hundred fifteen million, four hundred twenty-one thousand, eight hundred forty-nine".