423433655 has 4 divisors (see below), whose sum is σ = 508120392. Its totient is φ = 338746920.

The previous prime is 423433651. The next prime is 423433663. The reversal of 423433655 is 556334324.

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

It is not a de Polignac number, because 423433655 - 2² = 423433651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423433651) 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 in 3 ways as a sum of consecutive naturals, for example, 42343361 + ... + 42343370.

It is an arithmetic number, because the mean of its divisors is an integer number (127030098).

Almost surely, 2^423433655 is an apocalyptic number.

423433655 is a deficient number, since it is larger than the sum of its proper divisors (84686737).

423433655 is an equidigital number, since it uses as much as digits as its factorization.

423433655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84686736.

The product of its digits is 129600, while the sum is 35.

The square root of 423433655 is about 20577.5036143843. The cubic root of 423433655 is about 750.9225122371.

Adding to 423433655 its reverse (556334324), we get a palindrome (979767979).

The spelling of 423433655 in words is "four hundred twenty-three million, four hundred thirty-three thousand, six hundred fifty-five".