82173379 has 2 divisors, whose sum is σ = 82173380. Its totient is φ = 82173378.

The previous prime is 82173367. The next prime is 82173391. The reversal of 82173379 is 97337128.

It is a balanced prime because it is at equal distance from previous prime (82173367) and next prime (82173391).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82173379 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82173079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41086689 + 41086690.

It is an arithmetic number, because the mean of its divisors is an integer number (41086690).

Almost surely, 2^82173379 is an apocalyptic number.

82173379 is a deficient number, since it is larger than the sum of its proper divisors (1).

82173379 is an equidigital number, since it uses as much as digits as its factorization.

82173379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 40.

The square root of 82173379 is about 9064.9533368904. The cubic root of 82173379 is about 434.7541289016.

The spelling of 82173379 in words is "eighty-two million, one hundred seventy-three thousand, three hundred seventy-nine".