83966331 has 4 divisors (see below), whose sum is σ = 111955112. Its totient is φ = 55977552.

The previous prime is 83966329. The next prime is 83966347. The reversal of 83966331 is 13366938.

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

It is not a de Polignac number, because 83966331 - 2¹ = 83966329 is a prime.

It is a super-2 number, since 2×83966331² = 14100689483203122, which contains 22 as substring.

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 83966331.

It is not an unprimeable number, because it can be changed into a prime (83962331) 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, 13994386 + ... + 13994391.

It is an arithmetic number, because the mean of its divisors is an integer number (27988778).

Almost surely, 2^83966331 is an apocalyptic number.

83966331 is a deficient number, since it is larger than the sum of its proper divisors (27988781).

83966331 is a wasteful number, since it uses less digits than its factorization.

83966331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27988780.

The product of its digits is 69984, while the sum is 39.

The square root of 83966331 is about 9163.3144112815. The cubic root of 83966331 is about 437.8933926653.

The spelling of 83966331 in words is "eighty-three million, nine hundred sixty-six thousand, three hundred thirty-one".