86211277 has 4 divisors (see below), whose sum is σ = 87064956. Its totient is φ = 85357600.

The previous prime is 86211271. The next prime is 86211289. The reversal of 86211277 is 77211268.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 56115081 + 30096196 = 7491^2 + 5486^2 .

It is a cyclic number.

It is not a de Polignac number, because 86211277 - 2³ = 86211269 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 (86211271) 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, 426688 + ... + 426889.

It is an arithmetic number, because the mean of its divisors is an integer number (21766239).

Almost surely, 2^86211277 is an apocalyptic number.

It is an amenable number.

86211277 is a deficient number, since it is larger than the sum of its proper divisors (853679).

86211277 is a wasteful number, since it uses less digits than its factorization.

86211277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853678.

The product of its digits is 9408, while the sum is 34.

The square root of 86211277 is about 9285.0028002150. The cubic root of 86211277 is about 441.7616648784.

Subtracting from 86211277 its reverse (77211268), we obtain a palindrome (9000009).

The spelling of 86211277 in words is "eighty-six million, two hundred eleven thousand, two hundred seventy-seven".