84091850 has 12 divisors (see below), whose sum is σ = 156410934. Its totient is φ = 33636720.

The previous prime is 84091849. The next prime is 84091927. The reversal of 84091850 is 5819048.

It can be written as a sum of positive squares in 3 ways, for example, as 67059721 + 17032129 = 8189^2 + 4127^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 84091850.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 840869 + ... + 840968.

Almost surely, 2^84091850 is an apocalyptic number.

84091850 is a deficient number, since it is larger than the sum of its proper divisors (72319084).

84091850 is a wasteful number, since it uses less digits than its factorization.

84091850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681849 (or 1681844 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 84091850 is about 9170.1608491891. The cubic root of 84091850 is about 438.1114823638. Note that the first 3 decimals are identical.

The spelling of 84091850 in words is "eighty-four million, ninety-one thousand, eight hundred fifty".