84890934538 has 8 divisors (see below), whose sum is σ = 129738975588. Its totient is φ = 41644609344.

The previous prime is 84890934529. The next prime is 84890934563. The reversal of 84890934538 is 83543909848.

It can be written as a sum of positive squares in 2 ways, for example, as 84717669969 + 173264569 = 291063^2 + 13163^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 400428831 + ... + 400429042.

Almost surely, 2^84890934538 is an apocalyptic number.

84890934538 is a deficient number, since it is larger than the sum of its proper divisors (44848041050).

84890934538 is a wasteful number, since it uses less digits than its factorization.

84890934538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800857928.

The product of its (nonzero) digits is 29859840, while the sum is 61.

The spelling of 84890934538 in words is "eighty-four billion, eight hundred ninety million, nine hundred thirty-four thousand, five hundred thirty-eight".