872398841 has 2 divisors, whose sum is σ = 872398842. Its totient is φ = 872398840.

The previous prime is 872398829. The next prime is 872398847. The reversal of 872398841 is 148893278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 750760000 + 121638841 = 27400^2 + 11029^2 .

It is a cyclic number.

It is not a de Polignac number, because 872398841 - 2⁶ = 872398777 is a prime.

It is a super-2 number, since 2×872398841² = 1522159475556286562, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 872398841.

It is not a weakly prime, because it can be changed into another prime (872398847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436199420 + 436199421.

It is an arithmetic number, because the mean of its divisors is an integer number (436199421).

Almost surely, 2^872398841 is an apocalyptic number.

It is an amenable number.

872398841 is a deficient number, since it is larger than the sum of its proper divisors (1).

872398841 is an equidigital number, since it uses as much as digits as its factorization.

872398841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 774144, while the sum is 50.

The square root of 872398841 is about 29536.3985787029. The cubic root of 872398841 is about 955.5168719637.

The spelling of 872398841 in words is "eight hundred seventy-two million, three hundred ninety-eight thousand, eight hundred forty-one".