423649503 has 48 divisors (see below), whose sum is σ = 673920000. Its totient is φ = 255294720.

The previous prime is 423649481. The next prime is 423649531. The reversal of 423649503 is 305946324.

423649503 is a `hidden beast` number, since 4 + 2 + 3 + 649 + 5 + 0 + 3 = 666.

It is not a de Polignac number, because 423649503 - 2⁶ = 423649439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423649553) 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 47 ways as a sum of consecutive naturals, for example, 848748 + ... + 849246.

It is an arithmetic number, because the mean of its divisors is an integer number (14040000).

Almost surely, 2^423649503 is an apocalyptic number.

423649503 is a deficient number, since it is larger than the sum of its proper divisors (250270497).

423649503 is a wasteful number, since it uses less digits than its factorization.

423649503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732 (or 729 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 423649503 is about 20582.7477028700. The cubic root of 423649503 is about 751.0500864052.

The spelling of 423649503 in words is "four hundred twenty-three million, six hundred forty-nine thousand, five hundred three".