84138441 has 16 divisors (see below), whose sum is σ = 118809600. Its totient is φ = 52815888.

The previous prime is 84138419. The next prime is 84138449. The reversal of 84138441 is 14483148.

It is not a de Polignac number, because 84138441 - 2⁵ = 84138409 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84138449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5100 + ... + 13938.

It is an arithmetic number, because the mean of its divisors is an integer number (7425600).

Almost surely, 2^84138441 is an apocalyptic number.

It is an amenable number.

84138441 is a deficient number, since it is larger than the sum of its proper divisors (34671159).

84138441 is a wasteful number, since it uses less digits than its factorization.

84138441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9028.

The product of its digits is 12288, while the sum is 33.

The square root of 84138441 is about 9172.7008563454. The cubic root of 84138441 is about 438.1923791589.

The spelling of 84138441 in words is "eighty-four million, one hundred thirty-eight thousand, four hundred forty-one".