82219087 has 2 divisors, whose sum is σ = 82219088. Its totient is φ = 82219086.

The previous prime is 82219079. The next prime is 82219091. The reversal of 82219087 is 78091228.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82219087 - 2³ = 82219079 is a prime.

It is a super-2 number, since 2×82219087² = 13519956534227138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82219057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41109543 + 41109544.

It is an arithmetic number, because the mean of its divisors is an integer number (41109544).

Almost surely, 2^82219087 is an apocalyptic number.

82219087 is a deficient number, since it is larger than the sum of its proper divisors (1).

82219087 is an equidigital number, since it uses as much as digits as its factorization.

82219087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 82219087 is about 9067.4741245840. The cubic root of 82219087 is about 434.8347229603.

The spelling of 82219087 in words is "eighty-two million, two hundred nineteen thousand, eighty-seven".