86409708 has 96 divisors (see below), whose sum is σ = 266208768. Its totient is φ = 21120000.

The previous prime is 86409703. The next prime is 86409731. The reversal of 86409708 is 80790468.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 86409708.

It is not an unprimeable number, because it can be changed into a prime (86409703) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12958 + ... + 18458.

It is an arithmetic number, because the mean of its divisors is an integer number (2773008).

Almost surely, 2^86409708 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86409708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133104384).

86409708 is an abundant number, since it is smaller than the sum of its proper divisors (179799060).

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

86409708 is a wasteful number, since it uses less digits than its factorization.

86409708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5543 (or 5541 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 86409708 is about 9295.6822234842. The cubic root of 86409708 is about 442.1003368916.

The spelling of 86409708 in words is "eighty-six million, four hundred nine thousand, seven hundred eight".