905923 has 2 divisors, whose sum is σ = 905924. Its totient is φ = 905922.

The previous prime is 905917. The next prime is 905951. The reversal of 905923 is 329509.

It is an a-pointer prime, because the next prime (905951) can be obtained adding 905923 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-905923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 905891 and 905900.

It is not a weakly prime, because it can be changed into another prime (905963) 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, 452961 + 452962.

It is an arithmetic number, because the mean of its divisors is an integer number (452962).

2⁹⁰⁵⁹²³ is an apocalyptic number.

905923 is a deficient number, since it is larger than the sum of its proper divisors (1).

905923 is an equidigital number, since it uses as much as digits as its factorization.

905923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 905923 is about 951.7998739231. The cubic root of 905923 is about 96.7602752899.

The spelling of 905923 in words is "nine hundred five thousand, nine hundred twenty-three".