856789441 has 2 divisors, whose sum is σ = 856789442. Its totient is φ = 856789440.

The previous prime is 856789411. The next prime is 856789471. The reversal of 856789441 is 144987658.

It is a balanced prime because it is at equal distance from previous prime (856789411) and next prime (856789471).

It can be written as a sum of positive squares in only one way, i.e., 457788816 + 399000625 = 21396^2 + 19975^2 .

It is a cyclic number.

It is not a de Polignac number, because 856789441 - 2⁷ = 856789313 is a prime.

It is not a weakly prime, because it can be changed into another prime (856789411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428394720 + 428394721.

It is an arithmetic number, because the mean of its divisors is an integer number (428394721).

Almost surely, 2^856789441 is an apocalyptic number.

It is an amenable number.

856789441 is a deficient number, since it is larger than the sum of its proper divisors (1).

856789441 is an equidigital number, since it uses as much as digits as its factorization.

856789441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1935360, while the sum is 52.

The square root of 856789441 is about 29270.9658364735. The cubic root of 856789441 is about 949.7836778000.

The spelling of 856789441 in words is "eight hundred fifty-six million, seven hundred eighty-nine thousand, four hundred forty-one".