84809679 has 8 divisors (see below), whose sum is σ = 113233152. Its totient is φ = 56463000.

The previous prime is 84809657. The next prime is 84809687. The reversal of 84809679 is 97690848.

It is a happy number.

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

It is not a de Polignac number, because 84809679 - 2⁹ = 84809167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84809629) 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, 16569 + ... + 21074.

It is an arithmetic number, because the mean of its divisors is an integer number (14154144).

Almost surely, 2^84809679 is an apocalyptic number.

84809679 is a deficient number, since it is larger than the sum of its proper divisors (28423473).

84809679 is a wasteful number, since it uses less digits than its factorization.

84809679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38397.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 84809679 is about 9209.2170676991. The cubic root of 84809679 is about 439.3545615859.

The spelling of 84809679 in words is "eighty-four million, eight hundred nine thousand, six hundred seventy-nine".