82747969 has 2 divisors, whose sum is σ = 82747970. Its totient is φ = 82747968.

The previous prime is 82747967. The next prime is 82748023. The reversal of 82747969 is 96974728.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51667344 + 31080625 = 7188^2 + 5575^2 .

It is a cyclic number.

It is not a de Polignac number, because 82747969 - 2¹ = 82747967 is a prime.

It is a super-2 number, since 2×82747969² = 13694452747249922, which contains 22 as substring.

Together with 82747967, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (82747961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41373984 + 41373985.

It is an arithmetic number, because the mean of its divisors is an integer number (41373985).

Almost surely, 2^82747969 is an apocalyptic number.

It is an amenable number.

82747969 is a deficient number, since it is larger than the sum of its proper divisors (1).

82747969 is an equidigital number, since it uses as much as digits as its factorization.

82747969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 52.

The square root of 82747969 is about 9096.5910647891. The cubic root of 82747969 is about 435.7651026179.

The spelling of 82747969 in words is "eighty-two million, seven hundred forty-seven thousand, nine hundred sixty-nine".