855419 has 2 divisors, whose sum is σ = 855420. Its totient is φ = 855418.

The previous prime is 855401. The next prime is 855427. The reversal of 855419 is 914558.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 855419 - 2¹⁶ = 789883 is a prime.

It is a super-2 number, since 2×855419² = 1463483331122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (855499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427709 + 427710.

It is an arithmetic number, because the mean of its divisors is an integer number (427710).

2⁸⁵⁵⁴¹⁹ is an apocalyptic number.

855419 is a deficient number, since it is larger than the sum of its proper divisors (1).

855419 is an equidigital number, since it uses as much as digits as its factorization.

855419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 32.

The square root of 855419 is about 924.8886419456. Note that the first 3 decimals coincide. The cubic root of 855419 is about 94.9277012244.

The spelling of 855419 in words is "eight hundred fifty-five thousand, four hundred nineteen".