83825917 has 12 divisors (see below), whose sum is σ = 97728096. Its totient is φ = 71691480.

The previous prime is 83825909. The next prime is 83825927. The reversal of 83825917 is 71952838.

It is not a de Polignac number, because 83825917 - 2³ = 83825909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83825927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23992 + ... + 27262.

It is an arithmetic number, because the mean of its divisors is an integer number (8144008).

Almost surely, 2^83825917 is an apocalyptic number.

It is an amenable number.

83825917 is a deficient number, since it is larger than the sum of its proper divisors (13902179).

83825917 is a wasteful number, since it uses less digits than its factorization.

83825917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3808 (or 3801 counting only the distinct ones).

The product of its digits is 120960, while the sum is 43.

The square root of 83825917 is about 9155.6494581215. The cubic root of 83825917 is about 437.6491651365.

The spelling of 83825917 in words is "eighty-three million, eight hundred twenty-five thousand, nine hundred seventeen".