86121017 has 4 divisors (see below), whose sum is σ = 86602320. Its totient is φ = 85639716.

The previous prime is 86121001. The next prime is 86121019. The reversal of 86121017 is 71012168.

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 a cyclic number.

It is not a de Polignac number, because 86121017 - 2⁴ = 86121001 is a prime.

It is a super-2 number, since 2×86121017² = 14833659138228578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86121019) 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, 240383 + ... + 240740.

It is an arithmetic number, because the mean of its divisors is an integer number (21650580).

Almost surely, 2^86121017 is an apocalyptic number.

It is an amenable number.

86121017 is a deficient number, since it is larger than the sum of its proper divisors (481303).

86121017 is a wasteful number, since it uses less digits than its factorization.

86121017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481302.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 86121017 is about 9280.1410010840. The cubic root of 86121017 is about 441.6074417007.

The spelling of 86121017 in words is "eighty-six million, one hundred twenty-one thousand, seventeen".