83855140 has 12 divisors (see below), whose sum is σ = 176095836. Its totient is φ = 33542048.

The previous prime is 83855137. The next prime is 83855141. The reversal of 83855140 is 4155838.

It can be written as a sum of positive squares in 2 ways, for example, as 9585216 + 74269924 = 3096^2 + 8618^2 .

It is a junction number, because it is equal to n+sod(n) for n = 83855096 and 83855105.

It is not an unprimeable number, because it can be changed into a prime (83855141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2096359 + ... + 2096398.

It is an arithmetic number, because the mean of its divisors is an integer number (14674653).

Almost surely, 2^83855140 is an apocalyptic number.

It is an amenable number.

83855140 is an abundant number, since it is smaller than the sum of its proper divisors (92240696).

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

83855140 is a wasteful number, since it uses less digits than its factorization.

83855140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4192766 (or 4192764 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 83855140 is about 9157.2452189509. The cubic root of 83855140 is about 437.7000162977.

The spelling of 83855140 in words is "eighty-three million, eight hundred fifty-five thousand, one hundred forty".