86444534 has 64 divisors (see below), whose sum is σ = 157386240. Its totient is φ = 35185920.

The previous prime is 86444459. The next prime is 86444549. The reversal of 86444534 is 43544468.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 630914 + ... + 631050.

It is an arithmetic number, because the mean of its divisors is an integer number (2459160).

Almost surely, 2^86444534 is an apocalyptic number.

86444534 is a deficient number, since it is larger than the sum of its proper divisors (70941706).

86444534 is a wasteful number, since it uses less digits than its factorization.

86444534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245.

The product of its digits is 184320, while the sum is 38.

The square root of 86444534 is about 9297.5552700697. Note that the first 3 decimals coincide. The cubic root of 86444534 is about 442.1597226509.

The spelling of 86444534 in words is "eighty-six million, four hundred forty-four thousand, five hundred thirty-four".