86144544 has 36 divisors (see below), whose sum is σ = 244974366. Its totient is φ = 28714752.

The previous prime is 86144521. The next prime is 86144551. The reversal of 86144544 is 44544168.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 81216144 + 4928400 = 9012^2 + 2220^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 86144499 and 86144508.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 149269 + ... + 149844.

Almost surely, 2^86144544 is an apocalyptic number.

It is an amenable number.

86144544 is an abundant number, since it is smaller than the sum of its proper divisors (158829822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86144544 is a wasteful number, since it uses less digits than its factorization.

86144544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299129 (or 299118 counting only the distinct ones).

The product of its digits is 61440, while the sum is 36.

The square root of 86144544 is about 9281.4085137979. The cubic root of 86144544 is about 441.6476516002.

The spelling of 86144544 in words is "eighty-six million, one hundred forty-four thousand, five hundred forty-four".