86440804468 has 12 divisors (see below), whose sum is σ = 160169726052. Its totient is φ = 40678025600.

The previous prime is 86440804459. The next prime is 86440804469.

86440804468 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 27909711844 + 58531092624 = 167062^2 + 241932^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86440804469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 635594083 + ... + 635594218.

It is an arithmetic number, because the mean of its divisors is an integer number (13347477171).

Almost surely, 2^86440804468 is an apocalyptic number.

It is an amenable number.

86440804468 is a deficient number, since it is larger than the sum of its proper divisors (73728921584).

86440804468 is a wasteful number, since it uses less digits than its factorization.

86440804468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271188322 (or 1271188320 counting only the distinct ones).

The product of its (nonzero) digits is 4718592, while the sum is 52.

The spelling of 86440804468 in words is "eighty-six billion, four hundred forty million, eight hundred four thousand, four hundred sixty-eight".