84043641 has 8 divisors (see below), whose sum is σ = 122245344. Its totient is φ = 50935520.

The previous prime is 84043639. The next prime is 84043649. The reversal of 84043641 is 14634048.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84043641 - 2¹ = 84043639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84043599 and 84043608.

It is not an unprimeable number, because it can be changed into a prime (84043649) 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 7 ways as a sum of consecutive naturals, for example, 1273356 + ... + 1273421.

It is an arithmetic number, because the mean of its divisors is an integer number (15280668).

Almost surely, 2^84043641 is an apocalyptic number.

It is an amenable number.

84043641 is a deficient number, since it is larger than the sum of its proper divisors (38201703).

84043641 is a wasteful number, since it uses less digits than its factorization.

84043641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2546791.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 84043641 is about 9167.5318924997. The cubic root of 84043641 is about 438.0277447449.

Adding to 84043641 its reverse (14634048), we get a palindrome (98677689).

The spelling of 84043641 in words is "eighty-four million, forty-three thousand, six hundred forty-one".