859798847 has 2 divisors, whose sum is σ = 859798848. Its totient is φ = 859798846.

The previous prime is 859798789. The next prime is 859798861. The reversal of 859798847 is 748897958.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 859798847 - 2¹² = 859794751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (859798747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429899423 + 429899424.

It is an arithmetic number, because the mean of its divisors is an integer number (429899424).

Almost surely, 2^859798847 is an apocalyptic number.

859798847 is a deficient number, since it is larger than the sum of its proper divisors (1).

859798847 is an equidigital number, since it uses as much as digits as its factorization.

859798847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40642560, while the sum is 65.

The square root of 859798847 is about 29322.3267664761. The cubic root of 859798847 is about 950.8943920457.

The spelling of 859798847 in words is "eight hundred fifty-nine million, seven hundred ninety-eight thousand, eight hundred forty-seven".