421717088 has 48 divisors (see below), whose sum is σ = 913187520. Its totient is φ = 190488576.

The previous prime is 421717063. The next prime is 421717091. The reversal of 421717088 is 880717124.

It is a super-2 number, since 2×421717088² = 355690604622399488, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 8768 + ... + 30336.

It is an arithmetic number, because the mean of its divisors is an integer number (19024740).

Almost surely, 2^421717088 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 421717088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (456593760).

421717088 is an abundant number, since it is smaller than the sum of its proper divisors (491470432).

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

421717088 is a wasteful number, since it uses less digits than its factorization.

421717088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21639 (or 21631 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 38.

The square root of 421717088 is about 20535.7514593452. The cubic root of 421717088 is about 749.9064108404.

The spelling of 421717088 in words is "four hundred twenty-one million, seven hundred seventeen thousand, eighty-eight".