86405782 has 4 divisors (see below), whose sum is σ = 129608676. Its totient is φ = 43202890.

The previous prime is 86405777. The next prime is 86405801. The reversal of 86405782 is 28750468.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21601444 + ... + 21601447.

It is an arithmetic number, because the mean of its divisors is an integer number (32402169).

Almost surely, 2^86405782 is an apocalyptic number.

86405782 is a deficient number, since it is larger than the sum of its proper divisors (43202894).

86405782 is a wasteful number, since it uses less digits than its factorization.

86405782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43202893.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 86405782 is about 9295.4710477737. The cubic root of 86405782 is about 442.0936412234.

The spelling of 86405782 in words is "eighty-six million, four hundred five thousand, seven hundred eighty-two".