82872469 has 2 divisors, whose sum is σ = 82872470. Its totient is φ = 82872468.

The previous prime is 82872451. The next prime is 82872497. The reversal of 82872469 is 96427828.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48790225 + 34082244 = 6985^2 + 5838^2 .

It is a cyclic number.

It is not a de Polignac number, because 82872469 - 2⁵ = 82872437 is a prime.

It is a super-2 number, since 2×82872469² = 13735692236311922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82872409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41436234 + 41436235.

It is an arithmetic number, because the mean of its divisors is an integer number (41436235).

Almost surely, 2^82872469 is an apocalyptic number.

It is an amenable number.

82872469 is a deficient number, since it is larger than the sum of its proper divisors (1).

82872469 is an equidigital number, since it uses as much as digits as its factorization.

82872469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 46.

The square root of 82872469 is about 9103.4317155675. The cubic root of 82872469 is about 435.9835392742.

The spelling of 82872469 in words is "eighty-two million, eight hundred seventy-two thousand, four hundred sixty-nine".