423644477 has 4 divisors (see below), whose sum is σ = 429447900. Its totient is φ = 417841056.

The previous prime is 423644467. The next prime is 423644489. The reversal of 423644477 is 774446324.

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

It can be written as a sum of positive squares in 2 ways, for example, as 103449241 + 320195236 = 10171^2 + 17894^2 .

It is a cyclic number.

It is not a de Polignac number, because 423644477 - 2¹⁰ = 423643453 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 (423644447) 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, 2901602 + ... + 2901747.

It is an arithmetic number, because the mean of its divisors is an integer number (107361975).

Almost surely, 2^423644477 is an apocalyptic number.

It is an amenable number.

423644477 is a deficient number, since it is larger than the sum of its proper divisors (5803423).

423644477 is an equidigital number, since it uses as much as digits as its factorization.

423644477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5803422.

The product of its digits is 451584, while the sum is 41.

The square root of 423644477 is about 20582.6256099653. The cubic root of 423644477 is about 751.0471163457.

The spelling of 423644477 in words is "four hundred twenty-three million, six hundred forty-four thousand, four hundred seventy-seven".