84109649 has 8 divisors (see below), whose sum is σ = 92507520. Its totient is φ = 75987216.

The previous prime is 84109607. The next prime is 84109661. The reversal of 84109649 is 94690148.

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 84109649 - 2⁸ = 84109393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84109679) 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 7 ways as a sum of consecutive naturals, for example, 68219 + ... + 69440.

It is an arithmetic number, because the mean of its divisors is an integer number (11563440).

Almost surely, 2^84109649 is an apocalyptic number.

It is an amenable number.

84109649 is a deficient number, since it is larger than the sum of its proper divisors (8397871).

84109649 is a wasteful number, since it uses less digits than its factorization.

84109649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137719.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 84109649 is about 9171.1312824537. The cubic root of 84109649 is about 438.1423906154.

The spelling of 84109649 in words is "eighty-four million, one hundred nine thousand, six hundred forty-nine".