421644096 has 168 divisors, whose sum is σ = 1306128960. Its totient is φ = 133132032.

The previous prime is 421644071. The next prime is 421644103. The reversal of 421644096 is 690446124.

421644096 is a `hidden beast` number, since 4 + 2 + 1 + 644 + 0 + 9 + 6 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 421644096.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4093581 + ... + 4093683.

Almost surely, 2^421644096 is an apocalyptic number.

421644096 is a gapful number since it is divisible by the number (46) 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 421644096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (653064480).

421644096 is an abundant number, since it is smaller than the sum of its proper divisors (884484864).

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

421644096 is a wasteful number, since it uses less digits than its factorization.

421644096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 421644096 is about 20533.9741891335. The cubic root of 421644096 is about 749.8631430284.

The spelling of 421644096 in words is "four hundred twenty-one million, six hundred forty-four thousand, ninety-six".