82435109 has 2 divisors, whose sum is σ = 82435110. Its totient is φ = 82435108.

The previous prime is 82435103. The next prime is 82435117. The reversal of 82435109 is 90153428.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65254084 + 17181025 = 8078^2 + 4145^2 .

It is a cyclic number.

It is not a de Polignac number, because 82435109 - 2²⁰ = 81386533 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82435103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41217554 + 41217555.

It is an arithmetic number, because the mean of its divisors is an integer number (41217555).

Almost surely, 2^82435109 is an apocalyptic number.

It is an amenable number.

82435109 is a deficient number, since it is larger than the sum of its proper divisors (1).

82435109 is an equidigital number, since it uses as much as digits as its factorization.

82435109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 82435109 is about 9079.3782276101. The cubic root of 82435109 is about 435.2152174120.

The spelling of 82435109 in words is "eighty-two million, four hundred thirty-five thousand, one hundred nine".