86471904 has 48 divisors (see below), whose sum is σ = 236863872. Its totient is φ = 27570048.

The previous prime is 86471893. The next prime is 86471909. The reversal of 86471904 is 40917468.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86471909) 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 7 ways as a sum of consecutive naturals, for example, 17374 + ... + 21789.

It is an arithmetic number, because the mean of its divisors is an integer number (4934664).

Almost surely, 2^86471904 is an apocalyptic number.

It is an amenable number.

86471904 is an abundant number, since it is smaller than the sum of its proper divisors (150391968).

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

86471904 is a wasteful number, since it uses less digits than its factorization.

86471904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39199 (or 39191 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 86471904 is about 9299.0270458796. The cubic root of 86471904 is about 442.2063831473.

The spelling of 86471904 in words is "eighty-six million, four hundred seventy-one thousand, nine hundred four".