86128449 has 8 divisors (see below), whose sum is σ = 125277792. Its totient is φ = 52199040.

The previous prime is 86128429. The next prime is 86128459. The reversal of 86128449 is 94482168.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 86128449 - 2¹⁹ = 85604161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86128449.

It is not an unprimeable number, because it can be changed into a prime (86128429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1304944 + ... + 1305009.

It is an arithmetic number, because the mean of its divisors is an integer number (15659724).

Almost surely, 2^86128449 is an apocalyptic number.

It is an amenable number.

86128449 is a deficient number, since it is larger than the sum of its proper divisors (39149343).

86128449 is a wasteful number, since it uses less digits than its factorization.

86128449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2609967.

The product of its digits is 110592, while the sum is 42.

The square root of 86128449 is about 9280.5414173959. The cubic root of 86128449 is about 441.6201444927.

The spelling of 86128449 in words is "eighty-six million, one hundred twenty-eight thousand, four hundred forty-nine".