84435144 has 32 divisors (see below), whose sum is σ = 215999520. Its totient is φ = 27490176.

The previous prime is 84435137. The next prime is 84435149. The reversal of 84435144 is 44153448.

It is not an unprimeable number, because it can be changed into a prime (84435149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39877 + ... + 41940.

It is an arithmetic number, because the mean of its divisors is an integer number (6749985).

Almost surely, 2^84435144 is an apocalyptic number.

It is an amenable number.

84435144 is an abundant number, since it is smaller than the sum of its proper divisors (131564376).

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

84435144 is a wasteful number, since it uses less digits than its factorization.

84435144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81869 (or 81865 counting only the distinct ones).

The product of its digits is 30720, while the sum is 33.

The square root of 84435144 is about 9188.8597769255. The cubic root of 84435144 is about 438.7068505710.

The spelling of 84435144 in words is "eighty-four million, four hundred thirty-five thousand, one hundred forty-four".