83749884471 has 20 divisors (see below), whose sum is σ = 136481294664. Its totient is φ = 50757505200.

The previous prime is 83749884457. The next prime is 83749884473. The reversal of 83749884471 is 17448894738.

83749884471 is a `hidden beast` number, since 8 + 3 + 74 + 98 + 8 + 4 + 471 = 666.

It is not a de Polignac number, because 83749884471 - 2¹³ = 83749876279 is a prime.

It is a super-3 number, since 3×83749884471³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 83749884399 and 83749884408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83749884473) 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 19 ways as a sum of consecutive naturals, for example, 46996800 + ... + 46998581.

Almost surely, 2^83749884471 is an apocalyptic number.

83749884471 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

83749884471 is a deficient number, since it is larger than the sum of its proper divisors (52731410193).

83749884471 is a wasteful number, since it uses less digits than its factorization.

83749884471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93995404 (or 93995395 counting only the distinct ones).

The product of its digits is 43352064, while the sum is 63.

The spelling of 83749884471 in words is "eighty-three billion, seven hundred forty-nine million, eight hundred eighty-four thousand, four hundred seventy-one".