86809977 has 12 divisors (see below), whose sum is σ = 126802260. Its totient is φ = 57222528.

The previous prime is 86809937. The next prime is 86809979. The reversal of 86809977 is 77990868.

It can be written as a sum of positive squares in 2 ways, for example, as 6456681 + 80353296 = 2541^2 + 8964^2 .

It is not a de Polignac number, because 86809977 - 2⁸ = 86809721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86809979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53388 + ... + 54989.

It is an arithmetic number, because the mean of its divisors is an integer number (10566855).

Almost surely, 2^86809977 is an apocalyptic number.

It is an amenable number.

86809977 is a deficient number, since it is larger than the sum of its proper divisors (39992283).

86809977 is a wasteful number, since it uses less digits than its factorization.

86809977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108472 (or 108469 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The square root of 86809977 is about 9317.1871828358. The cubic root of 86809977 is about 442.7819212758.

The spelling of 86809977 in words is "eighty-six million, eight hundred nine thousand, nine hundred seventy-seven".