86491983 has 16 divisors (see below), whose sum is σ = 120602880. Its totient is φ = 55032384.

The previous prime is 86491981. The next prime is 86491997. The reversal of 86491983 is 38919468.

It is not a de Polignac number, because 86491983 - 2¹ = 86491981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86491981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38160 + ... + 40362.

It is an arithmetic number, because the mean of its divisors is an integer number (7537680).

Almost surely, 2^86491983 is an apocalyptic number.

86491983 is a deficient number, since it is larger than the sum of its proper divisors (34110897).

86491983 is a wasteful number, since it uses less digits than its factorization.

86491983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2798.

The product of its digits is 373248, while the sum is 48.

The square root of 86491983 is about 9300.1066122921. The cubic root of 86491983 is about 442.2406076541.

The spelling of 86491983 in words is "eighty-six million, four hundred ninety-one thousand, nine hundred eighty-three".