84980217 has 32 divisors (see below), whose sum is σ = 136913920. Its totient is φ = 45800640.

The previous prime is 84980209. The next prime is 84980219. The reversal of 84980217 is 71208948.

It is not a de Polignac number, because 84980217 - 2³ = 84980209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84980219) 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 31 ways as a sum of consecutive naturals, for example, 148542 + ... + 149112.

It is an arithmetic number, because the mean of its divisors is an integer number (4278560).

Almost surely, 2^84980217 is an apocalyptic number.

It is an amenable number.

84980217 is a deficient number, since it is larger than the sum of its proper divisors (51933703).

84980217 is a wasteful number, since it uses less digits than its factorization.

84980217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 84980217 is about 9218.4715110478. The cubic root of 84980217 is about 439.6488537921.

The spelling of 84980217 in words is "eighty-four million, nine hundred eighty thousand, two hundred seventeen".