4221409686 has 96 divisors (see below), whose sum is σ = 9475603200. Its totient is φ = 1246259520.

The previous prime is 4221409663. The next prime is 4221409729. The reversal of 4221409686 is 6869041224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14916501 + ... + 14916783.

It is an arithmetic number, because the mean of its divisors is an integer number (98704200).

Almost surely, 2^4221409686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4221409686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4737801600).

4221409686 is an abundant number, since it is smaller than the sum of its proper divisors (5254193514).

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

4221409686 is a wasteful number, since it uses less digits than its factorization.

4221409686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 4221409686 is about 64972.3763302528. The cubic root of 4221409686 is about 1616.1655088443.

The spelling of 4221409686 in words is "four billion, two hundred twenty-one million, four hundred nine thousand, six hundred eighty-six".