84215830489 has 24 divisors (see below), whose sum is σ = 101720830848. Its totient is φ = 68290231680.

The previous prime is 84215830459. The next prime is 84215830493. The reversal of 84215830489 is 98403851248.

It is not a de Polignac number, because 84215830489 - 2¹¹ = 84215828441 is a prime.

It is a super-2 number, since 2×84215830489² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84215830459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1814209 + ... + 1860049.

It is an arithmetic number, because the mean of its divisors is an integer number (4238367952).

Almost surely, 2^84215830489 is an apocalyptic number.

It is an amenable number.

84215830489 is a deficient number, since it is larger than the sum of its proper divisors (17505000359).

84215830489 is a wasteful number, since it uses less digits than its factorization.

84215830489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46613 (or 46594 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 52.

The spelling of 84215830489 in words is "eighty-four billion, two hundred fifteen million, eight hundred thirty thousand, four hundred eighty-nine".