423403811 has 4 divisors (see below), whose sum is σ = 423549672. Its totient is φ = 423257952.

The previous prime is 423403807. The next prime is 423403831. The reversal of 423403811 is 118304324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 423403811 - 2² = 423403807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423403831) 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 in 3 ways as a sum of consecutive naturals, for example, 68486 + ... + 74411.

It is an arithmetic number, because the mean of its divisors is an integer number (105887418).

Almost surely, 2^423403811 is an apocalyptic number.

423403811 is a deficient number, since it is larger than the sum of its proper divisors (145861).

423403811 is a wasteful number, since it uses less digits than its factorization.

423403811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145860.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 423403811 is about 20576.7784407569. The cubic root of 423403811 is about 750.9048699156.

The spelling of 423403811 in words is "four hundred twenty-three million, four hundred three thousand, eight hundred eleven".