86506444 has 24 divisors (see below), whose sum is σ = 155939840. Its totient is φ = 41959296.

The previous prime is 86506439. The next prime is 86506451. The reversal of 86506444 is 44460568.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66997 + ... + 68275.

Almost surely, 2^86506444 is an apocalyptic number.

It is an amenable number.

86506444 is a deficient number, since it is larger than the sum of its proper divisors (69433396).

86506444 is a wasteful number, since it uses less digits than its factorization.

86506444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1777 (or 1775 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 37.

The square root of 86506444 is about 9300.8840440036. The cubic root of 86506444 is about 442.2652530406.

The spelling of 86506444 in words is "eighty-six million, five hundred six thousand, four hundred forty-four".