86729904 has 60 divisors (see below), whose sum is σ = 243734400. Its totient is φ = 28789632.

The previous prime is 86729893. The next prime is 86729911. The reversal of 86729904 is 40992768.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 86729904.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37617 + ... + 39855.

It is an arithmetic number, because the mean of its divisors is an integer number (4062240).

Almost surely, 2^86729904 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 86729904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121867200).

86729904 is an abundant number, since it is smaller than the sum of its proper divisors (157004496).

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

86729904 is a wasteful number, since it uses less digits than its factorization.

86729904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2522 (or 2513 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 86729904 is about 9312.8891328094. The cubic root of 86729904 is about 442.6457396036.

The spelling of 86729904 in words is "eighty-six million, seven hundred twenty-nine thousand, nine hundred four".