84408650217 has 6 divisors (see below), whose sum is σ = 121923605882. Its totient is φ = 56272433472.

The previous prime is 84408650201. The next prime is 84408650237. The reversal of 84408650217 is 71205680448.

It can be written as a sum of positive squares in only one way, i.e., 43168788441 + 41239861776 = 207771^2 + 203076^2 .

It is not a de Polignac number, because 84408650217 - 2⁴ = 84408650201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84408650237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4689369448 + ... + 4689369465.

Almost surely, 2^84408650217 is an apocalyptic number.

It is an amenable number.

84408650217 is a deficient number, since it is larger than the sum of its proper divisors (37514955665).

84408650217 is a wasteful number, since it uses less digits than its factorization.

84408650217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9378738919 (or 9378738916 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 84408650217 in words is "eighty-four billion, four hundred eight million, six hundred fifty thousand, two hundred seventeen".