84470868 has 18 divisors (see below), whose sum is σ = 213523674. Its totient is φ = 28156944.

The previous prime is 84470863. The next prime is 84470899. The reversal of 84470868 is 86807448.

It can be written as a sum of positive squares in only one way, i.e., 83393424 + 1077444 = 9132^2 + 1038^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84470863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1173171 + ... + 1173242.

Almost surely, 2^84470868 is an apocalyptic number.

It is an amenable number.

84470868 is an abundant number, since it is smaller than the sum of its proper divisors (129052806).

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

84470868 is a wasteful number, since it uses less digits than its factorization.

84470868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2346423 (or 2346418 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The square root of 84470868 is about 9190.8034469245. The cubic root of 84470868 is about 438.7687132545.

The spelling of 84470868 in words is "eighty-four million, four hundred seventy thousand, eight hundred sixty-eight".