83942239 has 4 divisors (see below), whose sum is σ = 84546280. Its totient is φ = 83338200.

The previous prime is 83942237. The next prime is 83942263. The reversal of 83942239 is 93224938.

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 83942239 - 2¹ = 83942237 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 (83942231) 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, 301812 + ... + 302089.

It is an arithmetic number, because the mean of its divisors is an integer number (21136570).

Almost surely, 2^83942239 is an apocalyptic number.

83942239 is a deficient number, since it is larger than the sum of its proper divisors (604041).

83942239 is a wasteful number, since it uses less digits than its factorization.

83942239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604040.

The product of its digits is 93312, while the sum is 40.

The square root of 83942239 is about 9161.9997271338. Note that the first 3 decimals coincide. The cubic root of 83942239 is about 437.8515078739.

The spelling of 83942239 in words is "eighty-three million, nine hundred forty-two thousand, two hundred thirty-nine".