609923 has 2 divisors, whose sum is σ = 609924. Its totient is φ = 609922.

The previous prime is 609913. The next prime is 609929. The reversal of 609923 is 329906.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 609923 - 2⁴ = 609907 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (609929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304961 + 304962.

It is an arithmetic number, because the mean of its divisors is an integer number (304962).

2⁶⁰⁹⁹²³ is an apocalyptic number.

609923 is a deficient number, since it is larger than the sum of its proper divisors (1).

609923 is an equidigital number, since it uses as much as digits as its factorization.

609923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 609923 is about 780.9756718362. The cubic root of 609923 is about 84.8056922576.

The spelling of 609923 in words is "six hundred nine thousand, nine hundred twenty-three".