83399321 has 8 divisors (see below), whose sum is σ = 84282120. Its totient is φ = 82521472.

The previous prime is 83399293. The next prime is 83399333. The reversal of 83399321 is 12399338.

It can be written as a sum of positive squares in 4 ways, for example, as 6574096 + 76825225 = 2564^2 + 8765^2 .

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 83399321 - 2⁶ = 83399257 is a prime.

It is a super-2 number, since 2×83399321² = 13910893486522082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83395321) 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 7 ways as a sum of consecutive naturals, for example, 39275 + ... + 41343.

It is an arithmetic number, because the mean of its divisors is an integer number (10535265).

Almost surely, 2^83399321 is an apocalyptic number.

It is an amenable number.

83399321 is a deficient number, since it is larger than the sum of its proper divisors (882799).

83399321 is a wasteful number, since it uses less digits than its factorization.

83399321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2475.

The product of its digits is 34992, while the sum is 38.

The square root of 83399321 is about 9132.3228698946. The cubic root of 83399321 is about 436.9054930234.

The spelling of 83399321 in words is "eighty-three million, three hundred ninety-nine thousand, three hundred twenty-one".