423389400 has 144 divisors (see below), whose sum is σ = 1526900040. Its totient is φ = 96768000.

The previous prime is 423389399. The next prime is 423389423. The reversal of 423389400 is 4983324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 22200 + ... + 36600.

Almost surely, 2^423389400 is an apocalyptic number.

423389400 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 423389400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (763450020).

423389400 is an abundant number, since it is smaller than the sum of its proper divisors (1103510640).

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

423389400 is a wasteful number, since it uses less digits than its factorization.

423389400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14434 (or 14418 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 423389400 is about 20576.4282614841. The cubic root of 423389400 is about 750.8963505364.

The spelling of 423389400 in words is "four hundred twenty-three million, three hundred eighty-nine thousand, four hundred".