859919 has 2 divisors, whose sum is σ = 859920. Its totient is φ = 859918.

The previous prime is 859913. The next prime is 859927. The reversal of 859919 is 919958.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 859919 - 2¹⁶ = 794383 is a prime.

It is a super-2 number, since 2×859919² = 1478921373122, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (859913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429959 + 429960.

It is an arithmetic number, because the mean of its divisors is an integer number (429960).

2⁸⁵⁹⁹¹⁹ is an apocalyptic number.

859919 is a deficient number, since it is larger than the sum of its proper divisors (1).

859919 is an equidigital number, since it uses as much as digits as its factorization.

859919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 41.

The square root of 859919 is about 927.3181762480. The cubic root of 859919 is about 95.0938684379.

The spelling of 859919 in words is "eight hundred fifty-nine thousand, nine hundred nineteen".