82839409997 has 2 divisors, whose sum is σ = 82839409998. Its totient is φ = 82839409996.

The previous prime is 82839409967. The next prime is 82839410021. The reversal of 82839409997 is 79990493828.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73230313321 + 9609096676 = 270611^2 + 98026^2 .

It is a cyclic number.

It is not a de Polignac number, because 82839409997 - 2¹⁰ = 82839408973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82839409937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41419704998 + 41419704999.

It is an arithmetic number, because the mean of its divisors is an integer number (41419704999).

Almost surely, 2^82839409997 is an apocalyptic number.

It is an amenable number.

82839409997 is a deficient number, since it is larger than the sum of its proper divisors (1).

82839409997 is an equidigital number, since it uses as much as digits as its factorization.

82839409997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70543872, while the sum is 68.

The spelling of 82839409997 in words is "eighty-two billion, eight hundred thirty-nine million, four hundred nine thousand, nine hundred ninety-seven".