423444985400 has 96 divisors (see below), whose sum is σ = 1009658034000. Its totient is φ = 165069004800.

The previous prime is 423444985387. The next prime is 423444985417. The reversal of 423444985400 is 4589444324.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3806570 + ... + 3916230.

Almost surely, 2^423444985400 is an apocalyptic number.

423444985400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423444985400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (504829017000).

423444985400 is an abundant number, since it is smaller than the sum of its proper divisors (586213048600).

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

423444985400 is a wasteful number, since it uses less digits than its factorization.

423444985400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110169 (or 110160 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 47.

The spelling of 423444985400 in words is "four hundred twenty-three billion, four hundred forty-four million, nine hundred eighty-five thousand, four hundred".