423443400 has 96 divisors (see below), whose sum is σ = 1323248640. Its totient is φ = 112008960.

The previous prime is 423443357. The next prime is 423443437. The reversal of 423443400 is 4344324.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73422 + ... + 78978.

It is an arithmetic number, because the mean of its divisors is an integer number (13783840).

Almost surely, 2^423443400 is an apocalyptic number.

423443400 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 423443400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (661624320).

423443400 is an abundant number, since it is smaller than the sum of its proper divisors (899805240).

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

423443400 is a wasteful number, since it uses less digits than its factorization.

423443400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5703 (or 5694 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 423443400 is about 20577.7404007340. The cubic root of 423443400 is about 750.9282728276.

Adding to 423443400 its reverse (4344324), we get a palindrome (427787724).

The spelling of 423443400 in words is "four hundred twenty-three million, four hundred forty-three thousand, four hundred".