423981744 has 40 divisors (see below), whose sum is σ = 1096023600. Its totient is φ = 141232128.

The previous prime is 423981743. The next prime is 423981749. The reversal of 423981744 is 447189324.

It is a junction number, because it is equal to n+sod(n) for n = 423981696 and 423981705.

It is not an unprimeable number, because it can be changed into a prime (423981743) 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 7 ways as a sum of consecutive naturals, for example, 137532 + ... + 140580.

It is an arithmetic number, because the mean of its divisors is an integer number (27400590).

Almost surely, 2^423981744 is an apocalyptic number.

It is an amenable number.

423981744 is an abundant number, since it is smaller than the sum of its proper divisors (672041856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423981744 is a wasteful number, since it uses less digits than its factorization.

423981744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5957 (or 5951 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 423981744 is about 20590.8169823346. The cubic root of 423981744 is about 751.2463684956.

The spelling of 423981744 in words is "four hundred twenty-three million, nine hundred eighty-one thousand, seven hundred forty-four".