86240857447 has 4 divisors (see below), whose sum is σ = 86355692896. Its totient is φ = 86126022000.

The previous prime is 86240857369. The next prime is 86240857501. The reversal of 86240857447 is 74475804268.

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

It is a cyclic number.

It is not a de Polignac number, because 86240857447 - 2¹⁹ = 86240333159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86240807447) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 57416598 + ... + 57418099.

It is an arithmetic number, because the mean of its divisors is an integer number (21588923224).

Almost surely, 2^86240857447 is an apocalyptic number.

86240857447 is a deficient number, since it is larger than the sum of its proper divisors (114835449).

86240857447 is a wasteful number, since it uses less digits than its factorization.

86240857447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114835448.

The product of its (nonzero) digits is 12042240, while the sum is 55.

The spelling of 86240857447 in words is "eighty-six billion, two hundred forty million, eight hundred fifty-seven thousand, four hundred forty-seven".