115782089 has 8 divisors (see below), whose sum is σ = 117645000. Its totient is φ = 113933952.

The previous prime is 115782083. The next prime is 115782113. The reversal of 115782089 is 980287511.

It can be written as a sum of positive squares in 4 ways, for example, as 13104400 + 102677689 = 3620^2 + 10133^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115782089 - 2¹² = 115777993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115782083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12677 + ... + 19805.

It is an arithmetic number, because the mean of its divisors is an integer number (14705625).

Almost surely, 2^115782089 is an apocalyptic number.

It is an amenable number.

115782089 is a deficient number, since it is larger than the sum of its proper divisors (1862911).

115782089 is a wasteful number, since it uses less digits than its factorization.

115782089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7387.

The product of its (nonzero) digits is 40320, while the sum is 41.

The square root of 115782089 is about 10760.2085946324. The cubic root of 115782089 is about 487.3943162536.

The spelling of 115782089 in words is "one hundred fifteen million, seven hundred eighty-two thousand, eighty-nine".