83299221 has 12 divisors (see below), whose sum is σ = 122294380. Its totient is φ = 54622080.

The previous prime is 83299219. The next prime is 83299243. The reversal of 83299221 is 12299238.

It can be written as a sum of positive squares in 2 ways, for example, as 13242321 + 70056900 = 3639^2 + 8370^2 .

It is not a de Polignac number, because 83299221 - 2¹ = 83299219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83299421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75316 + ... + 76413.

Almost surely, 2^83299221 is an apocalyptic number.

It is an amenable number.

83299221 is a deficient number, since it is larger than the sum of its proper divisors (38995159).

83299221 is a wasteful number, since it uses less digits than its factorization.

83299221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151796 (or 151793 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 83299221 is about 9126.8406910606. The cubic root of 83299221 is about 436.7306244979.

The spelling of 83299221 in words is "eighty-three million, two hundred ninety-nine thousand, two hundred twenty-one".