86117905 has 4 divisors (see below), whose sum is σ = 103341492. Its totient is φ = 68894320.

The previous prime is 86117893. The next prime is 86117947. The reversal of 86117905 is 50971168.

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 34680321 + 51437584 = 5889^2 + 7172^2 .

It is a de Polignac number, because none of the positive numbers 2^k-86117905 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8611786 + ... + 8611795.

It is an arithmetic number, because the mean of its divisors is an integer number (25835373).

Almost surely, 2^86117905 is an apocalyptic number.

It is an amenable number.

86117905 is a deficient number, since it is larger than the sum of its proper divisors (17223587).

86117905 is a wasteful number, since it uses less digits than its factorization.

86117905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17223586.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 86117905 is about 9279.9733297031. The cubic root of 86117905 is about 441.6021224458.

The spelling of 86117905 in words is "eighty-six million, one hundred seventeen thousand, nine hundred five".