86499943 has 4 divisors (see below), whose sum is σ = 86526880. Its totient is φ = 86473008.

The previous prime is 86499937. The next prime is 86499947. The reversal of 86499943 is 34999468.

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 86499943 - 2¹³ = 86491751 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 (86499947) 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, 7878 + ... + 15331.

It is an arithmetic number, because the mean of its divisors is an integer number (21631720).

Almost surely, 2^86499943 is an apocalyptic number.

86499943 is a deficient number, since it is larger than the sum of its proper divisors (26937).

86499943 is a wasteful number, since it uses less digits than its factorization.

86499943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26936.

The product of its digits is 1679616, while the sum is 52.

The square root of 86499943 is about 9300.5345545296. The cubic root of 86499943 is about 442.2541739491.

The spelling of 86499943 in words is "eighty-six million, four hundred ninety-nine thousand, nine hundred forty-three".