83945844 has 18 divisors (see below), whose sum is σ = 212196530. Its totient is φ = 27981936.

The previous prime is 83945833. The next prime is 83945867. The reversal of 83945844 is 44854938.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 83942244 + 3600 = 9162^2 + 60^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 83945844.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1165879 + ... + 1165950.

Almost surely, 2^83945844 is an apocalyptic number.

It is an amenable number.

83945844 is an abundant number, since it is smaller than the sum of its proper divisors (128250686).

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

83945844 is a wasteful number, since it uses less digits than its factorization.

83945844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331839 (or 2331834 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 83945844 is about 9162.1964615479. The cubic root of 83945844 is about 437.8577758033.

The spelling of 83945844 in words is "eighty-three million, nine hundred forty-five thousand, eight hundred forty-four".