86939111 has 4 divisors (see below), whose sum is σ = 99358992. Its totient is φ = 74519232.

The previous prime is 86939089. The next prime is 86939119. The reversal of 86939111 is 11193968.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86939111 - 2¹⁰ = 86938087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86939119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6209930 + ... + 6209943.

It is an arithmetic number, because the mean of its divisors is an integer number (24839748).

Almost surely, 2^86939111 is an apocalyptic number.

86939111 is a deficient number, since it is larger than the sum of its proper divisors (12419881).

86939111 is a wasteful number, since it uses less digits than its factorization.

86939111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12419880.

The product of its digits is 11664, while the sum is 38.

The square root of 86939111 is about 9324.1144887866. The cubic root of 86939111 is about 443.0013656078.

The spelling of 86939111 in words is "eighty-six million, nine hundred thirty-nine thousand, one hundred eleven".