872859461 has 2 divisors, whose sum is σ = 872859462. Its totient is φ = 872859460.

The previous prime is 872859439. The next prime is 872859479. The reversal of 872859461 is 164958278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 867597025 + 5262436 = 29455^2 + 2294^2 .

It is a cyclic number.

It is not a de Polignac number, because 872859461 - 2⁶ = 872859397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (872859761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436429730 + 436429731.

It is an arithmetic number, because the mean of its divisors is an integer number (436429731).

Almost surely, 2^872859461 is an apocalyptic number.

It is an amenable number.

872859461 is a deficient number, since it is larger than the sum of its proper divisors (1).

872859461 is an equidigital number, since it uses as much as digits as its factorization.

872859461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 50.

The square root of 872859461 is about 29544.1950474201. The cubic root of 872859461 is about 955.6850109394.

The spelling of 872859461 in words is "eight hundred seventy-two million, eight hundred fifty-nine thousand, four hundred sixty-one".