4217989890 has 64 divisors (see below), whose sum is σ = 10466104320. Its totient is φ = 1086808320.

The previous prime is 4217989847. The next prime is 4217989903. The reversal of 4217989890 is 989897124.

It is a self number, because there is not a number n which added to its sum of digits gives 4217989890.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 656172 + ... + 662568.

It is an arithmetic number, because the mean of its divisors is an integer number (163532880).

Almost surely, 2^4217989890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4217989890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5233052160).

4217989890 is an abundant number, since it is smaller than the sum of its proper divisors (6248114430).

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

4217989890 is a wasteful number, since it uses less digits than its factorization.

4217989890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7147.

The product of its (nonzero) digits is 2612736, while the sum is 57.

The square root of 4217989890 is about 64946.0536907363. The cubic root of 4217989890 is about 1615.7289682964.

The spelling of 4217989890 in words is "four billion, two hundred seventeen million, nine hundred eighty-nine thousand, eight hundred ninety".