872818259 has 2 divisors, whose sum is σ = 872818260. Its totient is φ = 872818258.

The previous prime is 872818241. The next prime is 872818273. The reversal of 872818259 is 952818278.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-872818259 is a prime.

It is not a weakly prime, because it can be changed into another prime (872818229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436409129 + 436409130.

It is an arithmetic number, because the mean of its divisors is an integer number (436409130).

Almost surely, 2^872818259 is an apocalyptic number.

872818259 is a deficient number, since it is larger than the sum of its proper divisors (1).

872818259 is an equidigital number, since it uses as much as digits as its factorization.

872818259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 645120, while the sum is 50.

The square root of 872818259 is about 29543.4977448507. The cubic root of 872818259 is about 955.6699734849.

The spelling of 872818259 in words is "eight hundred seventy-two million, eight hundred eighteen thousand, two hundred fifty-nine".