83421671 has 4 divisors (see below), whose sum is σ = 83476344. Its totient is φ = 83367000.

The previous prime is 83421641. The next prime is 83421691. The reversal of 83421671 is 17612438.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83421671 is a prime.

It is a super-3 number, since 3×83421671³ (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 (83421631) 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 3 ways as a sum of consecutive naturals, for example, 24980 + ... + 28121.

It is an arithmetic number, because the mean of its divisors is an integer number (20869086).

Almost surely, 2^83421671 is an apocalyptic number.

83421671 is a deficient number, since it is larger than the sum of its proper divisors (54673).

83421671 is a wasteful number, since it uses less digits than its factorization.

83421671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54672.

The product of its digits is 8064, while the sum is 32.

The square root of 83421671 is about 9133.5464634500. The cubic root of 83421671 is about 436.9445179839.

The spelling of 83421671 in words is "eighty-three million, four hundred twenty-one thousand, six hundred seventy-one".