858992947 has 2 divisors, whose sum is σ = 858992948. Its totient is φ = 858992946.

The previous prime is 858992941. The next prime is 858992957. The reversal of 858992947 is 749299858.

858992947 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 is a cyclic number.

It is not a de Polignac number, because 858992947 - 2⁷ = 858992819 is a prime.

It is not a weakly prime, because it can be changed into another prime (858992941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429496473 + 429496474.

It is an arithmetic number, because the mean of its divisors is an integer number (429496474).

Almost surely, 2^858992947 is an apocalyptic number.

858992947 is a deficient number, since it is larger than the sum of its proper divisors (1).

858992947 is an equidigital number, since it uses as much as digits as its factorization.

858992947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13063680, while the sum is 61.

The square root of 858992947 is about 29308.5814566314. The cubic root of 858992947 is about 950.5972041834.

The spelling of 858992947 in words is "eight hundred fifty-eight million, nine hundred ninety-two thousand, nine hundred forty-seven".