8439940358220 has 144 divisors (see below), whose sum is σ = 27956025780480. Its totient is φ = 1896432080256.

The previous prime is 8439940358203. The next prime is 8439940358371. The reversal of 8439940358220 is 228530499348.

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, 24154744 + ... + 24501663.

It is an arithmetic number, because the mean of its divisors is an integer number (194139067920).

Almost surely, 2^{8439940358220} is an apocalyptic number.

It is an amenable number.

8439940358220 is an abundant number, since it is smaller than the sum of its proper divisors (19516085422260).

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

8439940358220 is a wasteful number, since it uses less digits than its factorization.

8439940358220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48656492 (or 48656483 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 57.

The spelling of 8439940358220 in words is "eight trillion, four hundred thirty-nine billion, nine hundred forty million, three hundred fifty-eight thousand, two hundred twenty".