82448789 has 2 divisors, whose sum is σ = 82448790. Its totient is φ = 82448788.

The previous prime is 82448777. The next prime is 82448791. The reversal of 82448789 is 98784428.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75516100 + 6932689 = 8690^2 + 2633^2 .

It is a cyclic number.

It is not a de Polignac number, because 82448789 - 2⁸ = 82448533 is a prime.

Together with 82448791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82448749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41224394 + 41224395.

It is an arithmetic number, because the mean of its divisors is an integer number (41224395).

Almost surely, 2^82448789 is an apocalyptic number.

It is an amenable number.

82448789 is a deficient number, since it is larger than the sum of its proper divisors (1).

82448789 is an equidigital number, since it uses as much as digits as its factorization.

82448789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1032192, while the sum is 50.

The square root of 82448789 is about 9080.1315519105. The cubic root of 82448789 is about 435.2392905484.

The spelling of 82448789 in words is "eighty-two million, four hundred forty-eight thousand, seven hundred eighty-nine".