84440890 has 16 divisors (see below), whose sum is σ = 152559360. Its totient is φ = 33650640.

The previous prime is 84440879. The next prime is 84440911. The reversal of 84440890 is 9804448.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12870 + ... + 18289.

It is an arithmetic number, because the mean of its divisors is an integer number (9534960).

Almost surely, 2^84440890 is an apocalyptic number.

84440890 is a deficient number, since it is larger than the sum of its proper divisors (68118470).

84440890 is a wasteful number, since it uses less digits than its factorization.

84440890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31437.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 84440890 is about 9189.1724328146. The cubic root of 84440890 is about 438.7168020054.

The spelling of 84440890 in words is "eighty-four million, four hundred forty thousand, eight hundred ninety".