423240899 has 2 divisors, whose sum is σ = 423240900. Its totient is φ = 423240898.

The previous prime is 423240893. The next prime is 423240919. The reversal of 423240899 is 998042324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423240899 - 2²⁴ = 406463683 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (423240893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211620449 + 211620450.

It is an arithmetic number, because the mean of its divisors is an integer number (211620450).

Almost surely, 2^423240899 is an apocalyptic number.

423240899 is a deficient number, since it is larger than the sum of its proper divisors (1).

423240899 is an equidigital number, since it uses as much as digits as its factorization.

423240899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 423240899 is about 20572.8194227238. The cubic root of 423240899 is about 750.8085496463.

The spelling of 423240899 in words is "four hundred twenty-three million, two hundred forty thousand, eight hundred ninety-nine".