423984929 has 2 divisors, whose sum is σ = 423984930. Its totient is φ = 423984928.

The previous prime is 423984917. The next prime is 423984973. The reversal of 423984929 is 929489324.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 422384704 + 1600225 = 20552^2 + 1265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423984929 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (423984989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211992464 + 211992465.

It is an arithmetic number, because the mean of its divisors is an integer number (211992465).

Almost surely, 2^423984929 is an apocalyptic number.

It is an amenable number.

423984929 is a deficient number, since it is larger than the sum of its proper divisors (1).

423984929 is an equidigital number, since it uses as much as digits as its factorization.

423984929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 50.

The square root of 423984929 is about 20590.8943224912. The cubic root of 423984929 is about 751.2482496409.

The spelling of 423984929 in words is "four hundred twenty-three million, nine hundred eighty-four thousand, nine hundred twenty-nine".