83889644 has 12 divisors (see below), whose sum is σ = 147546000. Its totient is φ = 41733648.

The previous prime is 83889623. The next prime is 83889661. The reversal of 83889644 is 44698838.

It is a junction number, because it is equal to n+sod(n) for n = 83889592 and 83889601.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51899 + ... + 53490.

It is an arithmetic number, because the mean of its divisors is an integer number (12295500).

Almost surely, 2^83889644 is an apocalyptic number.

It is an amenable number.

83889644 is a deficient number, since it is larger than the sum of its proper divisors (63656356).

83889644 is a wasteful number, since it uses less digits than its factorization.

83889644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105592 (or 105590 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 50.

The square root of 83889644 is about 9159.1289978906. The cubic root of 83889644 is about 437.7600417592.

The spelling of 83889644 in words is "eighty-three million, eight hundred eighty-nine thousand, six hundred forty-four".