84290805 has 24 divisors (see below), whose sum is σ = 146571360. Its totient is φ = 44811360.

The previous prime is 84290753. The next prime is 84290819. The reversal of 84290805 is 50809248.

It is not a de Polignac number, because 84290805 - 2⁶ = 84290741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84290805.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 12066 + ... + 17724.

It is an arithmetic number, because the mean of its divisors is an integer number (6107140).

Almost surely, 2^84290805 is an apocalyptic number.

It is an amenable number.

84290805 is a deficient number, since it is larger than the sum of its proper divisors (62280555).

84290805 is a wasteful number, since it uses less digits than its factorization.

84290805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6001 (or 5998 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 84290805 is about 9181.0023962528. The cubic root of 84290805 is about 438.4567231874.

The spelling of 84290805 in words is "eighty-four million, two hundred ninety thousand, eight hundred five".