83939471 has 16 divisors (see below), whose sum is σ = 104855040. Its totient is φ = 65280480.

The previous prime is 83939447. The next prime is 83939497. The reversal of 83939471 is 17493938.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 83939471 - 2⁶ = 83939407 is a prime.

It is a super-3 number, since 3×83939471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83939071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67685 + ... + 68913.

It is an arithmetic number, because the mean of its divisors is an integer number (6553440).

Almost surely, 2^83939471 is an apocalyptic number.

83939471 is a deficient number, since it is larger than the sum of its proper divisors (20915569).

83939471 is a wasteful number, since it uses less digits than its factorization.

83939471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134.

The product of its digits is 163296, while the sum is 44.

The square root of 83939471 is about 9161.8486671632. The cubic root of 83939471 is about 437.8466950951.

The spelling of 83939471 in words is "eighty-three million, nine hundred thirty-nine thousand, four hundred seventy-one".