919223 has 2 divisors, whose sum is σ = 919224. Its totient is φ = 919222.

The previous prime is 919189. The next prime is 919229. The reversal of 919223 is 322919.

It is a strong prime.

It is an emirp because it is prime and its reverse (322919) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 919223 - 2¹⁰ = 918199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 919192 and 919201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (919229) 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, 459611 + 459612.

It is an arithmetic number, because the mean of its divisors is an integer number (459612).

2⁹¹⁹²²³ is an apocalyptic number.

919223 is a deficient number, since it is larger than the sum of its proper divisors (1).

919223 is an equidigital number, since it uses as much as digits as its factorization.

919223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 26.

The square root of 919223 is about 958.7611798566. The cubic root of 919223 is about 97.2314944203.

The spelling of 919223 in words is "nine hundred nineteen thousand, two hundred twenty-three".