86841940 has 48 divisors (see below), whose sum is σ = 187830720. Its totient is φ = 33707520.

The previous prime is 86841929. The next prime is 86841941. The reversal of 86841940 is 4914868.

It is a junction number, because it is equal to n+sod(n) for n = 86841893 and 86841902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86841941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207051 + ... + 207469.

It is an arithmetic number, because the mean of its divisors is an integer number (3913140).

Almost surely, 2^86841940 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 86841940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93915360).

86841940 is an abundant number, since it is smaller than the sum of its proper divisors (100988780).

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

86841940 is a wasteful number, since it uses less digits than its factorization.

86841940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712 (or 710 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 86841940 is about 9318.9022958715. The cubic root of 86841940 is about 442.8362579715.

The spelling of 86841940 in words is "eighty-six million, eight hundred forty-one thousand, nine hundred forty".