859670947 has 2 divisors, whose sum is σ = 859670948. Its totient is φ = 859670946.

The previous prime is 859670881. The next prime is 859670989. The reversal of 859670947 is 749076958.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-859670947 is a prime.

It is not a weakly prime, because it can be changed into another prime (859670347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429835473 + 429835474.

It is an arithmetic number, because the mean of its divisors is an integer number (429835474).

Almost surely, 2^859670947 is an apocalyptic number.

859670947 is a deficient number, since it is larger than the sum of its proper divisors (1).

859670947 is an equidigital number, since it uses as much as digits as its factorization.

859670947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 55.

The square root of 859670947 is about 29320.1457533894. The cubic root of 859670947 is about 950.8472393796.

The spelling of 859670947 in words is "eight hundred fifty-nine million, six hundred seventy thousand, nine hundred forty-seven".