872859439 has 2 divisors, whose sum is σ = 872859440. Its totient is φ = 872859438.

The previous prime is 872859437. The next prime is 872859461. The reversal of 872859439 is 934958278.

872859439 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 872859439 - 2¹ = 872859437 is a prime.

Together with 872859437, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 872859439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (872859437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436429719 + 436429720.

It is an arithmetic number, because the mean of its divisors is an integer number (436429720).

Almost surely, 2^872859439 is an apocalyptic number.

872859439 is a deficient number, since it is larger than the sum of its proper divisors (1).

872859439 is an equidigital number, since it uses as much as digits as its factorization.

872859439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4354560, while the sum is 55.

The square root of 872859439 is about 29544.1946750965. The cubic root of 872859439 is about 955.6850029102.

The spelling of 872859439 in words is "eight hundred seventy-two million, eight hundred fifty-nine thousand, four hundred thirty-nine".