115394989 has 4 divisors (see below), whose sum is σ = 119117440. Its totient is φ = 111672540.

The previous prime is 115394959. The next prime is 115395001. The reversal of 115394989 is 989493511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 115394989 - 2⁵ = 115394957 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 (115394959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1861179 + ... + 1861240.

It is an arithmetic number, because the mean of its divisors is an integer number (29779360).

Almost surely, 2^115394989 is an apocalyptic number.

It is an amenable number.

115394989 is a deficient number, since it is larger than the sum of its proper divisors (3722451).

115394989 is an equidigital number, since it uses as much as digits as its factorization.

115394989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3722450.

The product of its digits is 349920, while the sum is 49.

The square root of 115394989 is about 10742.2059652569. The cubic root of 115394989 is about 486.8505332543.

The spelling of 115394989 in words is "one hundred fifteen million, three hundred ninety-four thousand, nine hundred eighty-nine".