84447992 has 16 divisors (see below), whose sum is σ = 158600400. Its totient is φ = 42154560.

The previous prime is 84447991. The next prime is 84447997. The reversal of 84447992 is 29974448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84447991) 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, 3317 + ... + 13412.

It is an arithmetic number, because the mean of its divisors is an integer number (9912525).

Almost surely, 2^84447992 is an apocalyptic number.

It is an amenable number.

84447992 is a deficient number, since it is larger than the sum of its proper divisors (74152408).

84447992 is a wasteful number, since it uses less digits than its factorization.

84447992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17366 (or 17362 counting only the distinct ones).

The product of its digits is 580608, while the sum is 47.

The square root of 84447992 is about 9189.5588577472. The cubic root of 84447992 is about 438.7291012575.

The spelling of 84447992 in words is "eighty-four million, four hundred forty-seven thousand, nine hundred ninety-two".