83210899 has 4 divisors (see below), whose sum is σ = 87590440. Its totient is φ = 78831360.

The previous prime is 83210887. The next prime is 83210917. The reversal of 83210899 is 99801238.

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

It is a cyclic number.

It is not a de Polignac number, because 83210899 - 2⁵ = 83210867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83210819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2189742 + ... + 2189779.

It is an arithmetic number, because the mean of its divisors is an integer number (21897610).

Almost surely, 2^83210899 is an apocalyptic number.

83210899 is a deficient number, since it is larger than the sum of its proper divisors (4379541).

83210899 is a wasteful number, since it uses less digits than its factorization.

83210899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4379540.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 83210899 is about 9122.0008221881. Note that the first 3 decimals coincide. The cubic root of 83210899 is about 436.5762150380.

The spelling of 83210899 in words is "eighty-three million, two hundred ten thousand, eight hundred ninety-nine".