82819249 has 2 divisors, whose sum is σ = 82819250. Its totient is φ = 82819248.

The previous prime is 82819241. The next prime is 82819277. The reversal of 82819249 is 94291828.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80281600 + 2537649 = 8960^2 + 1593^2 .

It is a cyclic number.

It is not a de Polignac number, because 82819249 - 2³ = 82819241 is a prime.

It is not a weakly prime, because it can be changed into another prime (82819241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41409624 + 41409625.

It is an arithmetic number, because the mean of its divisors is an integer number (41409625).

Almost surely, 2^82819249 is an apocalyptic number.

It is an amenable number.

82819249 is a deficient number, since it is larger than the sum of its proper divisors (1).

82819249 is an equidigital number, since it uses as much as digits as its factorization.

82819249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 43.

The square root of 82819249 is about 9100.5081726242. The cubic root of 82819249 is about 435.8901909727.

The spelling of 82819249 in words is "eighty-two million, eight hundred nineteen thousand, two hundred forty-nine".