84831290 has 16 divisors (see below), whose sum is σ = 152893440. Its totient is φ = 33888720.

The previous prime is 84831289. The next prime is 84831311. The reversal of 84831290 is 9213848.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 84831290.

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, 3335 + ... + 13445.

It is an arithmetic number, because the mean of its divisors is an integer number (9555840).

Almost surely, 2^84831290 is an apocalyptic number.

84831290 is a deficient number, since it is larger than the sum of its proper divisors (68062150).

84831290 is a wasteful number, since it uses less digits than its factorization.

84831290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10957.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 84831290 is about 9210.3903283194. The cubic root of 84831290 is about 439.3918768435.

The spelling of 84831290 in words is "eighty-four million, eight hundred thirty-one thousand, two hundred ninety".