83940784659 has 24 divisors (see below), whose sum is σ = 126711636480. Its totient is φ = 53446144752.

The previous prime is 83940784637. The next prime is 83940784663. The reversal of 83940784659 is 95648704938.

83940784659 is a `hidden beast` number, since 83 + 94 + 0 + 7 + 8 + 465 + 9 = 666.

It is not a de Polignac number, because 83940784659 - 2¹² = 83940780563 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83940784596 and 83940784605.

It is not an unprimeable number, because it can be changed into a prime (83940784559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 171259 + ... + 444084.

It is an arithmetic number, because the mean of its divisors is an integer number (5279651520).

Almost surely, 2^83940784659 is an apocalyptic number.

83940784659 is a deficient number, since it is larger than the sum of its proper divisors (42770851821).

83940784659 is a wasteful number, since it uses less digits than its factorization.

83940784659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616031 (or 616028 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 83940784659 in words is "eighty-three billion, nine hundred forty million, seven hundred eighty-four thousand, six hundred fifty-nine".