82438859 has 2 divisors, whose sum is σ = 82438860. Its totient is φ = 82438858.

The previous prime is 82438841. The next prime is 82438883. The reversal of 82438859 is 95883428.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82438859 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82438459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41219429 + 41219430.

It is an arithmetic number, because the mean of its divisors is an integer number (41219430).

Almost surely, 2^82438859 is an apocalyptic number.

82438859 is a deficient number, since it is larger than the sum of its proper divisors (1).

82438859 is an equidigital number, since it uses as much as digits as its factorization.

82438859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 552960, while the sum is 47.

The square root of 82438859 is about 9079.5847372003. The cubic root of 82438859 is about 435.2218166726.

The spelling of 82438859 in words is "eighty-two million, four hundred thirty-eight thousand, eight hundred fifty-nine".