83855508 has 48 divisors (see below), whose sum is σ = 215054784. Its totient is φ = 25219840.

The previous prime is 83855507. The next prime is 83855549. The reversal of 83855508 is 80555838.

It is a self number, because there is not a number n which added to its sum of digits gives 83855508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83855507) 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, 15766 + ... + 20402.

It is an arithmetic number, because the mean of its divisors is an integer number (4480308).

Almost surely, 2^83855508 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 83855508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107527392).

83855508 is an abundant number, since it is smaller than the sum of its proper divisors (131199276).

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

83855508 is a wasteful number, since it uses less digits than its factorization.

83855508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4792 (or 4790 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 42.

The square root of 83855508 is about 9157.2653123080. The cubic root of 83855508 is about 437.7006565819.

The spelling of 83855508 in words is "eighty-three million, eight hundred fifty-five thousand, five hundred eight".