8249209420 has 24 divisors (see below), whose sum is σ = 17360454384. Its totient is φ = 3292614336.

The previous prime is 8249209411. The next prime is 8249209427. The reversal of 8249209420 is 249029428.

It is not an unprimeable number, because it can be changed into a prime (8249209427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432267 + ... + 450946.

It is an arithmetic number, because the mean of its divisors is an integer number (723352266).

Almost surely, 2^8249209420 is an apocalyptic number.

It is an amenable number.

8249209420 is an abundant number, since it is smaller than the sum of its proper divisors (9111244964).

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

8249209420 is a wasteful number, since it uses less digits than its factorization.

8249209420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883689 (or 883687 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 8249209420 is about 90825.1585189919. The cubic root of 8249209420 is about 2020.5554643395. Note that the first 3 decimals are identical.

The spelling of 8249209420 in words is "eight billion, two hundred forty-nine million, two hundred nine thousand, four hundred twenty".