83855380 has 24 divisors (see below), whose sum is σ = 201253248. Its totient is φ = 28750368.

The previous prime is 83855377. The next prime is 83855383. The reversal of 83855380 is 8355838.

It is an interprime number because it is at equal distance from previous prime (83855377) and next prime (83855383).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83855383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299344 + ... + 299623.

It is an arithmetic number, because the mean of its divisors is an integer number (8385552).

Almost surely, 2^83855380 is an apocalyptic number.

It is an amenable number.

83855380 is an abundant number, since it is smaller than the sum of its proper divisors (117397868).

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

83855380 is a wasteful number, since it uses less digits than its factorization.

83855380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598983 (or 598981 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 83855380 is about 9157.2583233193. The cubic root of 83855380 is about 437.7004338746.

The spelling of 83855380 in words is "eighty-three million, eight hundred fifty-five thousand, three hundred eighty".