423824649 has 4 divisors (see below), whose sum is σ = 565099536. Its totient is φ = 282549764.

The previous prime is 423824633. The next prime is 423824669. The reversal of 423824649 is 946428324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 423824649 - 2⁴ = 423824633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 423824649.

It is not an unprimeable number, because it can be changed into a prime (423824669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70637439 + ... + 70637444.

It is an arithmetic number, because the mean of its divisors is an integer number (141274884).

Almost surely, 2^423824649 is an apocalyptic number.

It is an amenable number.

423824649 is a deficient number, since it is larger than the sum of its proper divisors (141274887).

423824649 is a wasteful number, since it uses less digits than its factorization.

423824649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141274886.

The product of its digits is 331776, while the sum is 42.

The square root of 423824649 is about 20587.0019429736. The cubic root of 423824649 is about 751.1535723403.

The spelling of 423824649 in words is "four hundred twenty-three million, eight hundred twenty-four thousand, six hundred forty-nine".