82716979 has 2 divisors, whose sum is σ = 82716980. Its totient is φ = 82716978.

The previous prime is 82716973. The next prime is 82717001. The reversal of 82716979 is 97961728.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82716979 - 2⁹ = 82716467 is a prime.

It is a super-2 number, since 2×82716979² = 13684197229772882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (82716973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41358489 + 41358490.

It is an arithmetic number, because the mean of its divisors is an integer number (41358490).

Almost surely, 2^82716979 is an apocalyptic number.

82716979 is a deficient number, since it is larger than the sum of its proper divisors (1).

82716979 is an equidigital number, since it uses as much as digits as its factorization.

82716979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 49.

The square root of 82716979 is about 9094.8875199202. The cubic root of 82716979 is about 435.7106962605.

The spelling of 82716979 in words is "eighty-two million, seven hundred sixteen thousand, nine hundred seventy-nine".