84406533894 has 20 divisors (see below), whose sum is σ = 189133159644. Its totient is φ = 28135511244.

The previous prime is 84406533863. The next prime is 84406533899. The reversal of 84406533894 is 49833560448.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 84406533894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84406533899) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 260513832 + ... + 260514155.

Almost surely, 2^84406533894 is an apocalyptic number.

84406533894 is an abundant number, since it is smaller than the sum of its proper divisors (104726625750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84406533894 is a wasteful number, since it uses less digits than its factorization.

84406533894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521028001 (or 521027992 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 54.

The spelling of 84406533894 in words is "eighty-four billion, four hundred six million, five hundred thirty-three thousand, eight hundred ninety-four".