86804421 has 16 divisors (see below), whose sum is σ = 129342528. Its totient is φ = 51324800.

The previous prime is 86804413. The next prime is 86804437. The reversal of 86804421 is 12440868.

It is a cyclic number.

It is not a de Polignac number, because 86804421 - 2³ = 86804413 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86804491) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 30726 + ... + 33431.

It is an arithmetic number, because the mean of its divisors is an integer number (8083908).

Almost surely, 2^86804421 is an apocalyptic number.

It is an amenable number.

86804421 is a deficient number, since it is larger than the sum of its proper divisors (42538107).

86804421 is a wasteful number, since it uses less digits than its factorization.

86804421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64212.

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 86804421 is about 9316.8890194099. The cubic root of 86804421 is about 442.7724747854.

The spelling of 86804421 in words is "eighty-six million, eight hundred four thousand, four hundred twenty-one".