84491790339 has 24 divisors (see below), whose sum is σ = 124450547200. Its totient is φ = 50949779760.

The previous prime is 84491790311. The next prime is 84491790347. The reversal of 84491790339 is 93309719448.

It is not a de Polignac number, because 84491790339 - 2²¹ = 84489693187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84491790359) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 512587 + ... + 657060.

Almost surely, 2^84491790339 is an apocalyptic number.

84491790339 is a deficient number, since it is larger than the sum of its proper divisors (39958756861).

84491790339 is a wasteful number, since it uses less digits than its factorization.

84491790339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169871 (or 1169860 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 57.

The spelling of 84491790339 in words is "eighty-four billion, four hundred ninety-one million, seven hundred ninety thousand, three hundred thirty-nine".