83984771 has 4 divisors (see below), whose sum is σ = 90445152. Its totient is φ = 77524392.

The previous prime is 83984767. The next prime is 83984809. The reversal of 83984771 is 17748938.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 83984771 - 2² = 83984767 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83954771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3230171 + ... + 3230196.

It is an arithmetic number, because the mean of its divisors is an integer number (22611288).

Almost surely, 2^83984771 is an apocalyptic number.

83984771 is a deficient number, since it is larger than the sum of its proper divisors (6460381).

83984771 is a wasteful number, since it uses less digits than its factorization.

83984771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6460380.

The product of its digits is 338688, while the sum is 47.

The square root of 83984771 is about 9164.3205421897. The cubic root of 83984771 is about 437.9254458428.

The spelling of 83984771 in words is "eighty-three million, nine hundred eighty-four thousand, seven hundred seventy-one".