84219602290 has 16 divisors (see below), whose sum is σ = 151927010712. Its totient is φ = 33614123904.

The previous prime is 84219602273. The next prime is 84219602303. The reversal of 84219602290 is 9220691248.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 77134508361 + 7085093929 = 277731^2 + 84173^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9209829 + ... + 9218968.

Almost surely, 2^84219602290 is an apocalyptic number.

84219602290 is a deficient number, since it is larger than the sum of its proper divisors (67707408422).

84219602290 is a wasteful number, since it uses less digits than its factorization.

84219602290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18429261.

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 84219602290 in words is "eighty-four billion, two hundred nineteen million, six hundred two thousand, two hundred ninety".