872865443 has 2 divisors, whose sum is σ = 872865444. Its totient is φ = 872865442.

The previous prime is 872865439. The next prime is 872865563. The reversal of 872865443 is 344568278.

872865443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 872865443 - 2² = 872865439 is a prime.

It is not a weakly prime, because it can be changed into another prime (872865743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436432721 + 436432722.

It is an arithmetic number, because the mean of its divisors is an integer number (436432722).

Almost surely, 2^872865443 is an apocalyptic number.

872865443 is a deficient number, since it is larger than the sum of its proper divisors (1).

872865443 is an equidigital number, since it uses as much as digits as its factorization.

872865443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1290240, while the sum is 47.

The square root of 872865443 is about 29544.2962854085. The cubic root of 872865443 is about 955.6871941449.

It can be divided in two parts, 87286 and 5443, that added together give a palindrome (92729).

The spelling of 872865443 in words is "eight hundred seventy-two million, eight hundred sixty-five thousand, four hundred forty-three".