86447799 has 12 divisors (see below), whose sum is σ = 128244376. Its totient is φ = 56074032.

The previous prime is 86447773. The next prime is 86447813. The reversal of 86447799 is 99774468.

It is a happy number.

86447799 is a `hidden beast` number, since 86 + 4 + 477 + 99 = 666.

It is not a de Polignac number, because 86447799 - 2⁹ = 86447287 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 (86447299) 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, 129469 + ... + 130134.

Almost surely, 2^86447799 is an apocalyptic number.

86447799 is a deficient number, since it is larger than the sum of its proper divisors (41796577).

86447799 is a wasteful number, since it uses less digits than its factorization.

86447799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259646 (or 259643 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 86447799 is about 9297.7308522026. The cubic root of 86447799 is about 442.1652893546.

The spelling of 86447799 in words is "eighty-six million, four hundred forty-seven thousand, seven hundred ninety-nine".