86443109 has 4 divisors (see below), whose sum is σ = 86484960. Its totient is φ = 86401260.

The previous prime is 86443099. The next prime is 86443111. The reversal of 86443109 is 90134468.

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 a de Polignac number, because none of the positive numbers 2^k-86443109 is a prime.

It is a super-2 number, since 2×86443109² = 14944822187171762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86449109) 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, 17657 + ... + 22014.

It is an arithmetic number, because the mean of its divisors is an integer number (21621240).

Almost surely, 2^86443109 is an apocalyptic number.

It is an amenable number.

86443109 is a deficient number, since it is larger than the sum of its proper divisors (41851).

86443109 is a wasteful number, since it uses less digits than its factorization.

86443109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41850.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 86443109 is about 9297.4786367058. The cubic root of 86443109 is about 442.1572930349.

The spelling of 86443109 in words is "eighty-six million, four hundred forty-three thousand, one hundred nine".