86136444 has 36 divisors (see below), whose sum is σ = 223621944. Its totient is φ = 27935712.

The previous prime is 86136437. The next prime is 86136451. The reversal of 86136444 is 44463168.

86136444 is a `hidden beast` number, since 8 + 6 + 1 + 3 + 644 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (86136437) and next prime (86136451).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 86136399 and 86136408.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 31002 + ... + 33665.

Almost surely, 2^86136444 is an apocalyptic number.

It is an amenable number.

86136444 is an abundant number, since it is smaller than the sum of its proper divisors (137485500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86136444 is a wasteful number, since it uses less digits than its factorization.

86136444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64714 (or 64709 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 86136444 is about 9280.9721473561. The cubic root of 86136444 is about 441.6338087498.

The spelling of 86136444 in words is "eighty-six million, one hundred thirty-six thousand, four hundred forty-four".