9089643420 has 864 divisors, whose sum is σ = 35867482560. Its totient is φ = 1916006400.

The previous prime is 9089643397. The next prime is 9089643439. The reversal of 9089643420 is 243469809.

9089643420 is a `hidden beast` number, since 90 + 89 + 64 + 3 + 420 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 221698600 + ... + 221698640.

It is an arithmetic number, because the mean of its divisors is an integer number (41513290).

Almost surely, 2^9089643420 is an apocalyptic number.

9089643420 is a gapful number since it is divisible by the number (90) 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 9089643420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17933741280).

9089643420 is an abundant number, since it is smaller than the sum of its proper divisors (26777839140).

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

9089643420 is a wasteful number, since it uses less digits than its factorization.

9089643420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 9089643420 is about 95339.6214592863. The cubic root of 9089643420 is about 2086.9671616000.

The spelling of 9089643420 in words is "nine billion, eighty-nine million, six hundred forty-three thousand, four hundred twenty".