4221655290 has 144 divisors (see below), whose sum is σ = 11736721152. Its totient is φ = 1050831936.

The previous prime is 4221655283. The next prime is 4221655303. The reversal of 4221655290 is 925561224.

4221655290 is a `hidden beast` number, since 4 + 2 + 2 + 16 + 552 + 90 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3826879 + ... + 3827981.

It is an arithmetic number, because the mean of its divisors is an integer number (81505008).

Almost surely, 2^4221655290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4221655290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5868360576).

4221655290 is an abundant number, since it is smaller than the sum of its proper divisors (7515065862).

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

4221655290 is a wasteful number, since it uses less digits than its factorization.

4221655290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225 (or 1179 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 4221655290 is about 64974.2663675397. The cubic root of 4221655290 is about 1616.1968513772.

The spelling of 4221655290 in words is "four billion, two hundred twenty-one million, six hundred fifty-five thousand, two hundred ninety".