86344881 has 16 divisors (see below), whose sum is σ = 131712000. Its totient is φ = 49287888.

The previous prime is 86344877. The next prime is 86344883. The reversal of 86344881 is 18844368.

It is not a de Polignac number, because 86344881 - 2² = 86344877 is a prime.

It is a super-2 number, since 2×86344881² = 14910876949808322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86344883) 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 15 ways as a sum of consecutive naturals, for example, 27910 + ... + 30848.

It is an arithmetic number, because the mean of its divisors is an integer number (8232000).

Almost surely, 2^86344881 is an apocalyptic number.

It is an amenable number.

86344881 is a deficient number, since it is larger than the sum of its proper divisors (45367119).

86344881 is a wasteful number, since it uses less digits than its factorization.

86344881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4348.

The product of its digits is 147456, while the sum is 42.

The square root of 86344881 is about 9292.1946277508. The cubic root of 86344881 is about 441.9897505182.

The spelling of 86344881 in words is "eighty-six million, three hundred forty-four thousand, eight hundred eighty-one".