859135961 has 2 divisors, whose sum is σ = 859135962. Its totient is φ = 859135960.

The previous prime is 859135913. The next prime is 859136011. The reversal of 859135961 is 169531958.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 592630336 + 266505625 = 24344^2 + 16325^2 .

It is a cyclic number.

It is not a de Polignac number, because 859135961 - 2⁶ = 859135897 is a prime.

It is a super-2 number, since 2×859135961² = 1476229198966787042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (859135561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429567980 + 429567981.

It is an arithmetic number, because the mean of its divisors is an integer number (429567981).

Almost surely, 2^859135961 is an apocalyptic number.

It is an amenable number.

859135961 is a deficient number, since it is larger than the sum of its proper divisors (1).

859135961 is an equidigital number, since it uses as much as digits as its factorization.

859135961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 291600, while the sum is 47.

The square root of 859135961 is about 29311.0211524607. The cubic root of 859135961 is about 950.6499563295.

The spelling of 859135961 in words is "eight hundred fifty-nine million, one hundred thirty-five thousand, nine hundred sixty-one".