84489844 has 24 divisors (see below), whose sum is σ = 151207560. Its totient is φ = 41293824.

The previous prime is 84489841. The next prime is 84489857. The reversal of 84489844 is 44898448.

It can be written as a sum of positive squares in 4 ways, for example, as 3849444 + 80640400 = 1962^2 + 8980^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84489841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74272 + ... + 75400.

It is an arithmetic number, because the mean of its divisors is an integer number (6300315).

Almost surely, 2^84489844 is an apocalyptic number.

It is an amenable number.

84489844 is a deficient number, since it is larger than the sum of its proper divisors (66717716).

84489844 is a wasteful number, since it uses less digits than its factorization.

84489844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539 (or 1537 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 49.

The square root of 84489844 is about 9191.8357252510. The cubic root of 84489844 is about 438.8015665995.

The spelling of 84489844 in words is "eighty-four million, four hundred eighty-nine thousand, eight hundred forty-four".