82220799 has 4 divisors (see below), whose sum is σ = 109627736. Its totient is φ = 54813864.

The previous prime is 82220797. The next prime is 82220821. The reversal of 82220799 is 99702228.

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

It is not a de Polignac number, because 82220799 - 2¹ = 82220797 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 (82220797) 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, 13703464 + ... + 13703469.

It is an arithmetic number, because the mean of its divisors is an integer number (27406934).

Almost surely, 2^82220799 is an apocalyptic number.

82220799 is a deficient number, since it is larger than the sum of its proper divisors (27406937).

82220799 is a wasteful number, since it uses less digits than its factorization.

82220799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27406936.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 82220799 is about 9067.5685274499. The cubic root of 82220799 is about 434.8377410424.

The spelling of 82220799 in words is "eighty-two million, two hundred twenty thousand, seven hundred ninety-nine".