864419 has 2 divisors, whose sum is σ = 864420. Its totient is φ = 864418.

The previous prime is 864407. The next prime is 864427. The reversal of 864419 is 914468.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 864419 - 2¹² = 860323 is a prime.

It is a super-2 number, since 2×864419² = 1494440415122, which contains 22 as substring.

It is a Chen prime.

It is equal to p₆₈₆₇₅ and since 864419 and 68675 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (864439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432209 + 432210.

It is an arithmetic number, because the mean of its divisors is an integer number (432210).

2⁸⁶⁴⁴¹⁹ is an apocalyptic number.

864419 is a deficient number, since it is larger than the sum of its proper divisors (1).

864419 is an equidigital number, since it uses as much as digits as its factorization.

864419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 32.

The square root of 864419 is about 929.7413618851. The cubic root of 864419 is about 95.2594569503.

The spelling of 864419 in words is "eight hundred sixty-four thousand, four hundred nineteen".