83995311 has 4 divisors (see below), whose sum is σ = 111993752. Its totient is φ = 55996872.

The previous prime is 83995309. The next prime is 83995319. The reversal of 83995311 is 11359938.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 83995311 - 2¹ = 83995309 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83995311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83995319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13999216 + ... + 13999221.

It is an arithmetic number, because the mean of its divisors is an integer number (27998438).

Almost surely, 2^83995311 is an apocalyptic number.

83995311 is a deficient number, since it is larger than the sum of its proper divisors (27998441).

83995311 is a wasteful number, since it uses less digits than its factorization.

83995311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27998440.

The product of its digits is 29160, while the sum is 39.

The square root of 83995311 is about 9164.8955804199. The cubic root of 83995311 is about 437.9437648033.

The spelling of 83995311 in words is "eighty-three million, nine hundred ninety-five thousand, three hundred eleven".