84891968 has 28 divisors (see below), whose sum is σ = 192523872. Its totient is φ = 36382080.

The previous prime is 84891967. The next prime is 84891991. The reversal of 84891968 is 86919848.

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84891967) 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 3 ways as a sum of consecutive naturals, for example, 94298 + ... + 95193.

Almost surely, 2^84891968 is an apocalyptic number.

It is an amenable number.

84891968 is an abundant number, since it is smaller than the sum of its proper divisors (107631904).

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

84891968 is a wasteful number, since it uses less digits than its factorization.

84891968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189510 (or 189500 counting only the distinct ones).

The product of its digits is 995328, while the sum is 53.

The square root of 84891968 is about 9213.6837367038. The cubic root of 84891968 is about 439.4966143999.

The spelling of 84891968 in words is "eighty-four million, eight hundred ninety-one thousand, nine hundred sixty-eight".