86409311 has 4 divisors (see below), whose sum is σ = 86745792. Its totient is φ = 86072832.

The previous prime is 86409293. The next prime is 86409313. The reversal of 86409311 is 11390468.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86409311 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 (86409313) 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, 167855 + ... + 168368.

It is an arithmetic number, because the mean of its divisors is an integer number (21686448).

Almost surely, 2^86409311 is an apocalyptic number.

86409311 is a deficient number, since it is larger than the sum of its proper divisors (336481).

86409311 is a wasteful number, since it uses less digits than its factorization.

86409311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336480.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 86409311 is about 9295.6608694595. The cubic root of 86409311 is about 442.0996598300.

Adding to 86409311 its reverse (11390468), we get a palindrome (97799779).

The spelling of 86409311 in words is "eighty-six million, four hundred nine thousand, three hundred eleven".