923430491 has 2 divisors, whose sum is σ = 923430492. Its totient is φ = 923430490.

The previous prime is 923430481. The next prime is 923430503. The reversal of 923430491 is 194034329.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 923430491 - 2¹⁰ = 923429467 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (923430401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 461715245 + 461715246.

It is an arithmetic number, because the mean of its divisors is an integer number (461715246).

Almost surely, 2^923430491 is an apocalyptic number.

923430491 is a deficient number, since it is larger than the sum of its proper divisors (1).

923430491 is an equidigital number, since it uses as much as digits as its factorization.

923430491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 923430491 is about 30387.9991279452. Note that the first 3 decimals coincide. The cubic root of 923430491 is about 973.7961881017.

The spelling of 923430491 in words is "nine hundred twenty-three million, four hundred thirty thousand, four hundred ninety-one".