86144369 has 4 divisors (see below), whose sum is σ = 86294244. Its totient is φ = 85994496.

The previous prime is 86144363. The next prime is 86144417. The reversal of 86144369 is 96344168.

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

It can be written as a sum of positive squares in 2 ways, for example, as 79834225 + 6310144 = 8935^2 + 2512^2 .

It is a cyclic number.

It is not a de Polignac number, because 86144369 - 2⁴ = 86144353 is a prime.

It is a super-2 number, since 2×86144369² = 14841704620816322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86144363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74072 + ... + 75225.

It is an arithmetic number, because the mean of its divisors is an integer number (21573561).

Almost surely, 2^86144369 is an apocalyptic number.

It is an amenable number.

86144369 is a deficient number, since it is larger than the sum of its proper divisors (149875).

86144369 is a wasteful number, since it uses less digits than its factorization.

86144369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149874.

The product of its digits is 124416, while the sum is 41.

The square root of 86144369 is about 9281.3990863447. The cubic root of 86144369 is about 441.6473525354.

The spelling of 86144369 in words is "eighty-six million, one hundred forty-four thousand, three hundred sixty-nine".