858949229 has 2 divisors, whose sum is σ = 858949230. Its totient is φ = 858949228.

The previous prime is 858949219. The next prime is 858949261. The reversal of 858949229 is 922949858.

858949229 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 can be written as a sum of positive squares in only one way, i.e., 752240329 + 106708900 = 27427^2 + 10330^2 .

It is a cyclic number.

It is not a de Polignac number, because 858949229 - 2⁴ = 858949213 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (858949219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429474614 + 429474615.

It is an arithmetic number, because the mean of its divisors is an integer number (429474615).

Almost surely, 2^858949229 is an apocalyptic number.

It is an amenable number.

858949229 is a deficient number, since it is larger than the sum of its proper divisors (1).

858949229 is an equidigital number, since it uses as much as digits as its factorization.

858949229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3732480, while the sum is 56.

The square root of 858949229 is about 29307.8356246243. The cubic root of 858949229 is about 950.5810771927.

The spelling of 858949229 in words is "eight hundred fifty-eight million, nine hundred forty-nine thousand, two hundred twenty-nine".