423941544 has 72 divisors (see below), whose sum is σ = 1238336190. Its totient is φ = 130249728.

The previous prime is 423941537. The next prime is 423941549. The reversal of 423941544 is 445149324.

423941544 is a `hidden beast` number, since 4 + 23 + 94 + 1 + 544 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 220879044 + 203062500 = 14862^2 + 14250^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 423941499 and 423941508.

It is not an unprimeable number, because it can be changed into a prime (423941549) 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 17 ways as a sum of consecutive naturals, for example, 629592 + ... + 630264.

Almost surely, 2^423941544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423941544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (619168095).

423941544 is an abundant number, since it is smaller than the sum of its proper divisors (814394646).

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

423941544 is a wasteful number, since it uses less digits than its factorization.

423941544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371 (or 691 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 423941544 is about 20589.8407958877. The cubic root of 423941544 is about 751.2226245027. Note that the first 3 decimals are identical.

The spelling of 423941544 in words is "four hundred twenty-three million, nine hundred forty-one thousand, five hundred forty-four".