82009423 has 2 divisors, whose sum is σ = 82009424. Its totient is φ = 82009422.

The previous prime is 82009409. The next prime is 82009429. The reversal of 82009423 is 32490028.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82009423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82009391 and 82009400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82009429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41004711 + 41004712.

It is an arithmetic number, because the mean of its divisors is an integer number (41004712).

Almost surely, 2^82009423 is an apocalyptic number.

82009423 is a deficient number, since it is larger than the sum of its proper divisors (1).

82009423 is an equidigital number, since it uses as much as digits as its factorization.

82009423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 82009423 is about 9055.9054213259. The cubic root of 82009423 is about 434.4647894228.

The spelling of 82009423 in words is "eighty-two million, nine thousand, four hundred twenty-three".