83855740 has 24 divisors (see below), whose sum is σ = 185366160. Its totient is φ = 31776768.

The previous prime is 83855731. The next prime is 83855743. The reversal of 83855740 is 4755838.

It is a junction number, because it is equal to n+sod(n) for n = 83855693 and 83855702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83855743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109957 + ... + 110716.

It is an arithmetic number, because the mean of its divisors is an integer number (7723590).

Almost surely, 2^83855740 is an apocalyptic number.

It is an amenable number.

83855740 is an abundant number, since it is smaller than the sum of its proper divisors (101510420).

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

83855740 is a wasteful number, since it uses less digits than its factorization.

83855740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220701 (or 220699 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 83855740 is about 9157.2779798366. The cubic root of 83855740 is about 437.7010602384.

The spelling of 83855740 in words is "eighty-three million, eight hundred fifty-five thousand, seven hundred forty".