84190986887 has 16 divisors (see below), whose sum is σ = 102021699840. Its totient is φ = 67866579648.

The previous prime is 84190986877. The next prime is 84190986889. The reversal of 84190986887 is 78868909148.

It is not a de Polignac number, because 84190986887 - 2¹² = 84190982791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84190986889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2292053 + ... + 2328494.

It is an arithmetic number, because the mean of its divisors is an integer number (6376356240).

Almost surely, 2^84190986887 is an apocalyptic number.

84190986887 is a deficient number, since it is larger than the sum of its proper divisors (17830712953).

84190986887 is a wasteful number, since it uses less digits than its factorization.

84190986887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4620710.

The product of its (nonzero) digits is 55738368, while the sum is 68.

The spelling of 84190986887 in words is "eighty-four billion, one hundred ninety million, nine hundred eighty-six thousand, eight hundred eighty-seven".