86839445 has 32 divisors (see below), whose sum is σ = 132157440. Its totient is φ = 53202240.

The previous prime is 86839439. The next prime is 86839453. The reversal of 86839445 is 54493868.

It is not a de Polignac number, because 86839445 - 2¹⁰ = 86838421 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 86839445.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20804 + ... + 24626.

It is an arithmetic number, because the mean of its divisors is an integer number (4129920).

Almost surely, 2^86839445 is an apocalyptic number.

It is an amenable number.

86839445 is a deficient number, since it is larger than the sum of its proper divisors (45317995).

86839445 is a wasteful number, since it uses less digits than its factorization.

86839445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3905.

The product of its digits is 829440, while the sum is 47.

The square root of 86839445 is about 9318.7684272118. The cubic root of 86839445 is about 442.8320169829.

The spelling of 86839445 in words is "eighty-six million, eight hundred thirty-nine thousand, four hundred forty-five".