115353989 has 4 divisors (see below), whose sum is σ = 117245100. Its totient is φ = 113462880.

The previous prime is 115353949. The next prime is 115354021. The reversal of 115353989 is 989353511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37332100 + 78021889 = 6110^2 + 8833^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115353989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115353929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 945464 + ... + 945585.

It is an arithmetic number, because the mean of its divisors is an integer number (29311275).

Almost surely, 2^115353989 is an apocalyptic number.

It is an amenable number.

115353989 is a deficient number, since it is larger than the sum of its proper divisors (1891111).

115353989 is an equidigital number, since it uses as much as digits as its factorization.

115353989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891110.

The product of its digits is 145800, while the sum is 44.

The square root of 115353989 is about 10740.2974353600. The cubic root of 115353989 is about 486.7928668670.

The spelling of 115353989 in words is "one hundred fifteen million, three hundred fifty-three thousand, nine hundred eighty-nine".