859391473 has 2 divisors, whose sum is σ = 859391474. Its totient is φ = 859391472.

The previous prime is 859391453. The next prime is 859391479. The reversal of 859391473 is 374193958.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 608707584 + 250683889 = 24672^2 + 15833^2 .

It is a cyclic number.

It is not a de Polignac number, because 859391473 - 2⁵ = 859391441 is a prime.

It is not a weakly prime, because it can be changed into another prime (859391479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429695736 + 429695737.

It is an arithmetic number, because the mean of its divisors is an integer number (429695737).

Almost surely, 2^859391473 is an apocalyptic number.

It is an amenable number.

859391473 is a deficient number, since it is larger than the sum of its proper divisors (1).

859391473 is an equidigital number, since it uses as much as digits as its factorization.

859391473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 49.

The square root of 859391473 is about 29315.3794619821. The cubic root of 859391473 is about 950.7441899186.

The spelling of 859391473 in words is "eight hundred fifty-nine million, three hundred ninety-one thousand, four hundred seventy-three".