2947889831364 has 81 divisors (see below), whose sum is σ = 7566259986831. Its totient is φ = 967737188880.

The previous prime is 2947889831321. The next prime is 2947889831371. The reversal of 2947889831364 is 4631389887492.

The square root of 2947889831364 is 1716942.

It is a perfect power (a square), and thus also a powerful number.

2947889831364 is a `hidden beast` number, since 2 + 9 + 478 + 8 + 9 + 83 + 13 + 64 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2947889831292 and 2947889831301.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 690208549 + ... + 690212819.

Almost surely, 2^{2947889831364} is an apocalyptic number.

2947889831364 is the 1716942-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2947889831364

2947889831364 is an abundant number, since it is smaller than the sum of its proper divisors (4618370155467).

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

2947889831364 is an frugal number, since it uses more digits than its factorization.

2947889831364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8686 (or 4343 counting only the distinct ones).

The product of its digits is 501645312, while the sum is 72.

The spelling of 2947889831364 in words is "two trillion, nine hundred forty-seven billion, eight hundred eighty-nine million, eight hundred thirty-one thousand, three hundred sixty-four".