86440305 has 16 divisors (see below), whose sum is σ = 158062464. Its totient is φ = 39515520.

The previous prime is 86440247. The next prime is 86440327. The reversal of 86440305 is 50304468.

It is not a de Polignac number, because 86440305 - 2⁶ = 86440241 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411516 + ... + 411725.

It is an arithmetic number, because the mean of its divisors is an integer number (9878904).

Almost surely, 2^86440305 is an apocalyptic number.

It is an amenable number.

86440305 is a deficient number, since it is larger than the sum of its proper divisors (71622159).

86440305 is a wasteful number, since it uses less digits than its factorization.

86440305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823256.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 86440305 is about 9297.3278419124. The cubic root of 86440305 is about 442.1525121547.

It can be divided in two parts, 86 and 440305, that added together give a triangular number (440391 = T₉₃₈).

The spelling of 86440305 in words is "eighty-six million, four hundred forty thousand, three hundred five".