8639340252 has 12 divisors (see below), whose sum is σ = 20158460616. Its totient is φ = 2879780080.

The previous prime is 8639340239. The next prime is 8639340277. The reversal of 8639340252 is 2520439368.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359972499 + ... + 359972522.

It is an arithmetic number, because the mean of its divisors is an integer number (1679871718).

Almost surely, 2^8639340252 is an apocalyptic number.

It is an amenable number.

8639340252 is an abundant number, since it is smaller than the sum of its proper divisors (11519120364).

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

8639340252 is a wasteful number, since it uses less digits than its factorization.

8639340252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719945028 (or 719945026 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The square root of 8639340252 is about 92948.0513620377. The cubic root of 8639340252 is about 2051.9189053673.

The spelling of 8639340252 in words is "eight billion, six hundred thirty-nine million, three hundred forty thousand, two hundred fifty-two".