84089806 has 4 divisors (see below), whose sum is σ = 126134712. Its totient is φ = 42044902.

The previous prime is 84089791. The next prime is 84089807. The reversal of 84089806 is 60898048.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84089807) by changing a digit.

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 as a sum of consecutive naturals, namely, 21022450 + ... + 21022453.

It is an arithmetic number, because the mean of its divisors is an integer number (31533678).

Almost surely, 2^84089806 is an apocalyptic number.

84089806 is a deficient number, since it is larger than the sum of its proper divisors (42044906).

84089806 is a wasteful number, since it uses less digits than its factorization.

84089806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42044905.

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 84089806 is about 9170.0494000850. The cubic root of 84089806 is about 438.1079326455.

The spelling of 84089806 in words is "eighty-four million, eighty-nine thousand, eight hundred six".