83239389385 has 16 divisors (see below), whose sum is σ = 100352215440. Its totient is φ = 66282065920.

The previous prime is 83239389377. The next prime is 83239389413. The reversal of 83239389385 is 58398393238.

It can be written as a sum of positive squares in 8 ways, for example, as 25570248649 + 57669140736 = 159907^2 + 240144^2 .

It is not a de Polignac number, because 83239389385 - 2³ = 83239389377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1273359 + ... + 1337131.

It is an arithmetic number, because the mean of its divisors is an integer number (6272013465).

Almost surely, 2^83239389385 is an apocalyptic number.

It is an amenable number.

83239389385 is a deficient number, since it is larger than the sum of its proper divisors (17112826055).

83239389385 is a wasteful number, since it uses less digits than its factorization.

83239389385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64988.

The product of its digits is 33592320, while the sum is 61.

The spelling of 83239389385 in words is "eighty-three billion, two hundred thirty-nine million, three hundred eighty-nine thousand, three hundred eighty-five".