83738839 has 4 divisors (see below), whose sum is σ = 84602224. Its totient is φ = 82875456.

The previous prime is 83738827. The next prime is 83738849. The reversal of 83738839 is 93883738.

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 83738839 - 2¹⁵ = 83706071 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83738792 and 83738801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83738849) 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, 431547 + ... + 431740.

It is an arithmetic number, because the mean of its divisors is an integer number (21150556).

Almost surely, 2^83738839 is an apocalyptic number.

83738839 is a deficient number, since it is larger than the sum of its proper divisors (863385).

83738839 is an equidigital number, since it uses as much as digits as its factorization.

83738839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863384.

The product of its digits is 870912, while the sum is 49.

The square root of 83738839 is about 9150.8927979733. The cubic root of 83738839 is about 437.4975699457.

The spelling of 83738839 in words is "eighty-three million, seven hundred thirty-eight thousand, eight hundred thirty-nine".