8209843950 has 432 divisors, whose sum is σ = 27144512640. Its totient is φ = 1607126400.

The previous prime is 8209843937. The next prime is 8209843979. The reversal of 8209843950 is 593489028.

It is a self number, because there is not a number n which added to its sum of digits gives 8209843950.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 45864961 + ... + 45865139.

It is an arithmetic number, because the mean of its divisors is an integer number (62834520).

Almost surely, 2^8209843950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8209843950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13572256320).

8209843950 is an abundant number, since it is smaller than the sum of its proper divisors (18934668690).

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

8209843950 is a wasteful number, since it uses less digits than its factorization.

8209843950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 48.

The square root of 8209843950 is about 90608.1891994316. The cubic root of 8209843950 is about 2017.3362881919.

The spelling of 8209843950 in words is "eight billion, two hundred nine million, eight hundred forty-three thousand, nine hundred fifty".