83279905 has 8 divisors (see below), whose sum is σ = 100130112. Its totient is φ = 66494448.

The previous prime is 83279893. The next prime is 83279921. The reversal of 83279905 is 50997238.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83279905 - 2⁵ = 83279873 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13309 + ... + 18538.

It is an arithmetic number, because the mean of its divisors is an integer number (12516264).

Almost surely, 2^83279905 is an apocalyptic number.

It is an amenable number.

83279905 is a deficient number, since it is larger than the sum of its proper divisors (16850207).

83279905 is a wasteful number, since it uses less digits than its factorization.

83279905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32375.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 83279905 is about 9125.7824322082. The cubic root of 83279905 is about 436.6968645148.

The spelling of 83279905 in words is "eighty-three million, two hundred seventy-nine thousand, nine hundred five".