83785144 has 16 divisors (see below), whose sum is σ = 158623920. Its totient is φ = 41485440.

The previous prime is 83785127. The next prime is 83785153. The reversal of 83785144 is 44158738.

It is a junction number, because it is equal to n+sod(n) for n = 83785097 and 83785106.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 50017 + ... + 51664.

It is an arithmetic number, because the mean of its divisors is an integer number (9913995).

Almost surely, 2^83785144 is an apocalyptic number.

It is an amenable number.

83785144 is a deficient number, since it is larger than the sum of its proper divisors (74838776).

83785144 is a wasteful number, since it uses less digits than its factorization.

83785144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101790 (or 101786 counting only the distinct ones).

The product of its digits is 107520, while the sum is 40.

The square root of 83785144 is about 9153.4225293056. The cubic root of 83785144 is about 437.5781959821.

The spelling of 83785144 in words is "eighty-three million, seven hundred eighty-five thousand, one hundred forty-four".