86143982 has 4 divisors (see below), whose sum is σ = 129215976. Its totient is φ = 43071990.

The previous prime is 86143961. The next prime is 86144021. The reversal of 86143982 is 28934168.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21535994 + ... + 21535997.

It is an arithmetic number, because the mean of its divisors is an integer number (32303994).

Almost surely, 2^86143982 is an apocalyptic number.

86143982 is a deficient number, since it is larger than the sum of its proper divisors (43071994).

86143982 is a wasteful number, since it uses less digits than its factorization.

86143982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43071993.

The product of its digits is 82944, while the sum is 41.

The square root of 86143982 is about 9281.3782381713. The cubic root of 86143982 is about 441.6466911736.

The spelling of 86143982 in words is "eighty-six million, one hundred forty-three thousand, nine hundred eighty-two".