8209739252 has 24 divisors (see below), whose sum is σ = 16878765792. Its totient is φ = 3444645600.

The previous prime is 8209739249. The next prime is 8209739261. The reversal of 8209739252 is 2529379028.

It is a junction number, because it is equal to n+sod(n) for n = 8209739197 and 8209739206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7175774 + ... + 7176917.

It is an arithmetic number, because the mean of its divisors is an integer number (703281908).

Almost surely, 2^8209739252 is an apocalyptic number.

It is an amenable number.

8209739252 is an abundant number, since it is smaller than the sum of its proper divisors (8669026540).

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

8209739252 is a wasteful number, since it uses less digits than its factorization.

8209739252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14352719 (or 14352717 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 8209739252 is about 90607.6114462797. The cubic root of 8209739252 is about 2017.3277126342.

The spelling of 8209739252 in words is "eight billion, two hundred nine million, seven hundred thirty-nine thousand, two hundred fifty-two".