86444533 has 4 divisors (see below), whose sum is σ = 98793760. Its totient is φ = 74095308.

The previous prime is 86444459. The next prime is 86444549. The reversal of 86444533 is 33544468.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 86444533 - 2⁹ = 86444021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86444492 and 86444501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86444573) 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, 6174603 + ... + 6174616.

It is an arithmetic number, because the mean of its divisors is an integer number (24698440).

Almost surely, 2^86444533 is an apocalyptic number.

It is an amenable number.

86444533 is a deficient number, since it is larger than the sum of its proper divisors (12349227).

86444533 is a wasteful number, since it uses less digits than its factorization.

86444533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12349226.

The product of its digits is 138240, while the sum is 37.

The square root of 86444533 is about 9297.5552162921. Note that the first 3 decimals coincide. The cubic root of 86444533 is about 442.1597209459.

The spelling of 86444533 in words is "eighty-six million, four hundred forty-four thousand, five hundred thirty-three".