115989747 has 8 divisors (see below), whose sum is σ = 154824960. Its totient is φ = 77240520.

The previous prime is 115989743. The next prime is 115989751. The reversal of 115989747 is 747989511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (115989743) and next prime (115989751).

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

It is not a de Polignac number, because 115989747 - 2² = 115989743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115989747.

It is not an unprimeable number, because it can be changed into a prime (115989743) 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, 18279 + ... + 23792.

It is an arithmetic number, because the mean of its divisors is an integer number (19353120).

Almost surely, 2^115989747 is an apocalyptic number.

115989747 is a deficient number, since it is larger than the sum of its proper divisors (38835213).

115989747 is an equidigital number, since it uses as much as digits as its factorization.

115989747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42993.

The product of its digits is 635040, while the sum is 51.

The square root of 115989747 is about 10769.8536201752. The cubic root of 115989747 is about 487.6855267557.

The spelling of 115989747 in words is "one hundred fifteen million, nine hundred eighty-nine thousand, seven hundred forty-seven".