115228889 has 2 divisors, whose sum is σ = 115228890. Its totient is φ = 115228888.

The previous prime is 115228871. The next prime is 115228931. The reversal of 115228889 is 988822511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65286400 + 49942489 = 8080^2 + 7067^2 .

It is an emirp because it is prime and its reverse (988822511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115228889 - 2¹⁶ = 115163353 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (115228859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57614444 + 57614445.

It is an arithmetic number, because the mean of its divisors is an integer number (57614445).

Almost surely, 2^115228889 is an apocalyptic number.

It is an amenable number.

115228889 is a deficient number, since it is larger than the sum of its proper divisors (1).

115228889 is an equidigital number, since it uses as much as digits as its factorization.

115228889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92160, while the sum is 44.

The square root of 115228889 is about 10734.4719944672. The cubic root of 115228889 is about 486.6168295644.

The spelling of 115228889 in words is "one hundred fifteen million, two hundred twenty-eight thousand, eight hundred eighty-nine".