86209111 has 8 divisors (see below), whose sum is σ = 88231680. Its totient is φ = 84201312.

The previous prime is 86209093. The next prime is 86209117. The reversal of 86209111 is 11190268.

It is a happy number.

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

It is not a de Polignac number, because 86209111 - 2⁹ = 86208599 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86209111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86209117) 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, 8586 + ... + 15688.

It is an arithmetic number, because the mean of its divisors is an integer number (11028960).

Almost surely, 2^86209111 is an apocalyptic number.

86209111 is a deficient number, since it is larger than the sum of its proper divisors (2022569).

86209111 is a wasteful number, since it uses less digits than its factorization.

86209111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7385.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 86209111 is about 9284.8861597760. The cubic root of 86209111 is about 441.7579651931.

Adding to 86209111 its reverse (11190268), we get a palindrome (97399379).

It can be divided in two parts, 86209 and 111, that added together give a triangular number (86320 = T₄₁₅).

The spelling of 86209111 in words is "eighty-six million, two hundred nine thousand, one hundred eleven".