423404633 has 2 divisors, whose sum is σ = 423404634. Its totient is φ = 423404632.

The previous prime is 423404629. The next prime is 423404659. The reversal of 423404633 is 336404324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227768464 + 195636169 = 15092^2 + 13987^2 .

It is a cyclic number.

It is not a de Polignac number, because 423404633 - 2² = 423404629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 423404596 and 423404605.

It is not a weakly prime, because it can be changed into another prime (423404693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211702316 + 211702317.

It is an arithmetic number, because the mean of its divisors is an integer number (211702317).

Almost surely, 2^423404633 is an apocalyptic number.

It is an amenable number.

423404633 is a deficient number, since it is larger than the sum of its proper divisors (1).

423404633 is an equidigital number, since it uses as much as digits as its factorization.

423404633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 29.

The square root of 423404633 is about 20576.7984147194. The cubic root of 423404633 is about 750.9053558531.

Adding to 423404633 its reverse (336404324), we get a palindrome (759808957).

The spelling of 423404633 in words is "four hundred twenty-three million, four hundred four thousand, six hundred thirty-three".