858740461 has 2 divisors, whose sum is σ = 858740462. Its totient is φ = 858740460.

The previous prime is 858740447. The next prime is 858740479. The reversal of 858740461 is 164047858.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 558376900 + 300363561 = 23630^2 + 17331^2 .

It is a cyclic number.

It is not a de Polignac number, because 858740461 - 2¹³ = 858732269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (858740411) 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, 429370230 + 429370231.

It is an arithmetic number, because the mean of its divisors is an integer number (429370231).

Almost surely, 2^858740461 is an apocalyptic number.

It is an amenable number.

858740461 is a deficient number, since it is larger than the sum of its proper divisors (1).

858740461 is an equidigital number, since it uses as much as digits as its factorization.

858740461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 215040, while the sum is 43.

The square root of 858740461 is about 29304.2737668075. The cubic root of 858740461 is about 950.5040578984.

The spelling of 858740461 in words is "eight hundred fifty-eight million, seven hundred forty thousand, four hundred sixty-one".