83945039 has 4 divisors (see below), whose sum is σ = 84776280. Its totient is φ = 83113800.

The previous prime is 83945027. The next prime is 83945041. The reversal of 83945039 is 93054938.

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 83945039 - 2¹² = 83940943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83944987 and 83945005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83945339) 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, 415469 + ... + 415670.

It is an arithmetic number, because the mean of its divisors is an integer number (21194070).

Almost surely, 2^83945039 is an apocalyptic number.

83945039 is a deficient number, since it is larger than the sum of its proper divisors (831241).

83945039 is a wasteful number, since it uses less digits than its factorization.

83945039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831240.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 83945039 is about 9162.1525309285. The cubic root of 83945039 is about 437.8563761842.

The spelling of 83945039 in words is "eighty-three million, nine hundred forty-five thousand, thirty-nine".