86881938 has 64 divisors (see below), whose sum is σ = 206236800. Its totient is φ = 24053760.

The previous prime is 86881931. The next prime is 86881939. The reversal of 86881938 is 83918868.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (86881931) 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, 93058 + ... + 93986.

It is an arithmetic number, because the mean of its divisors is an integer number (3222450).

Almost surely, 2^86881938 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86881938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103118400).

86881938 is an abundant number, since it is smaller than the sum of its proper divisors (119354862).

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

86881938 is a wasteful number, since it uses less digits than its factorization.

86881938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067.

The product of its digits is 663552, while the sum is 51.

The square root of 86881938 is about 9321.0481170306. The cubic root of 86881938 is about 442.9042352874.

The spelling of 86881938 in words is "eighty-six million, eight hundred eighty-one thousand, nine hundred thirty-eight".