82309091 has 2 divisors, whose sum is σ = 82309092. Its totient is φ = 82309090.

The previous prime is 82309067. The next prime is 82309103. The reversal of 82309091 is 19090328.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82309091 - 2²² = 78114787 is a prime.

It is a super-2 number, since 2×82309091² = 13549572922492562, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82309021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41154545 + 41154546.

It is an arithmetic number, because the mean of its divisors is an integer number (41154546).

Almost surely, 2^82309091 is an apocalyptic number.

82309091 is a deficient number, since it is larger than the sum of its proper divisors (1).

82309091 is an equidigital number, since it uses as much as digits as its factorization.

82309091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 82309091 is about 9072.4357809797. The cubic root of 82309091 is about 434.9933341120.

The spelling of 82309091 in words is "eighty-two million, three hundred nine thousand, ninety-one".