423784441 has 2 divisors, whose sum is σ = 423784442. Its totient is φ = 423784440.

The previous prime is 423784409. The next prime is 423784457. The reversal of 423784441 is 144487324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 367834041 + 55950400 = 19179^2 + 7480^2 .

It is a cyclic number.

It is not a de Polignac number, because 423784441 - 2⁵ = 423784409 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 423784441.

It is not a weakly prime, because it can be changed into another prime (423784541) 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, 211892220 + 211892221.

It is an arithmetic number, because the mean of its divisors is an integer number (211892221).

Almost surely, 2^423784441 is an apocalyptic number.

It is an amenable number.

423784441 is a deficient number, since it is larger than the sum of its proper divisors (1).

423784441 is an equidigital number, since it uses as much as digits as its factorization.

423784441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86016, while the sum is 37.

The square root of 423784441 is about 20586.0253813115. The cubic root of 423784441 is about 751.1298177537.

The spelling of 423784441 in words is "four hundred twenty-three million, seven hundred eighty-four thousand, four hundred forty-one".