859477 has 2 divisors, whose sum is σ = 859478. Its totient is φ = 859476.

The previous prime is 859459. The next prime is 859493. The reversal of 859477 is 774958.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 848241 + 11236 = 921^2 + 106^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-859477 is a prime.

It is a Chen prime.

859477 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (859447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429738 + 429739.

It is an arithmetic number, because the mean of its divisors is an integer number (429739).

2⁸⁵⁹⁴⁷⁷ is an apocalyptic number.

It is an amenable number.

859477 is a deficient number, since it is larger than the sum of its proper divisors (1).

859477 is an equidigital number, since it uses as much as digits as its factorization.

859477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 40.

The square root of 859477 is about 927.0798239634. The cubic root of 859477 is about 95.0775728359.

The spelling of 859477 in words is "eight hundred fifty-nine thousand, four hundred seventy-seven".