82905983 has 4 divisors (see below), whose sum is σ = 85764840. Its totient is φ = 80047128.

The previous prime is 82905973. The next prime is 82906003. The reversal of 82905983 is 38950928.

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-82905983 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 (82905913) 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, 1429385 + ... + 1429442.

It is an arithmetic number, because the mean of its divisors is an integer number (21441210).

Almost surely, 2^82905983 is an apocalyptic number.

82905983 is a deficient number, since it is larger than the sum of its proper divisors (2858857).

82905983 is a wasteful number, since it uses less digits than its factorization.

82905983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2858856.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 82905983 is about 9105.2722639139. The cubic root of 82905983 is about 436.0423025897.

The spelling of 82905983 in words is "eighty-two million, nine hundred five thousand, nine hundred eighty-three".