2447999892 has 72 divisors (see below), whose sum is σ = 6706646856. Its totient is φ = 748410624.

The previous prime is 2447999831. The next prime is 2447999903. The reversal of 2447999892 is 2989997442.

It can be written as a sum of positive squares in 4 ways, for example, as 125316 + 2447874576 = 354^2 + 49476^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56818 + ... + 90134.

It is an arithmetic number, because the mean of its divisors is an integer number (93147873).

Almost surely, 2^2447999892 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2447999892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3353323428).

2447999892 is an abundant number, since it is smaller than the sum of its proper divisors (4258646964).

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

2447999892 is a wasteful number, since it uses less digits than its factorization.

2447999892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33497 (or 33492 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 63.

The square root of 2447999892 is about 49477.2664160016. The cubic root of 2447999892 is about 1347.7328003415.

The spelling of 2447999892 in words is "two billion, four hundred forty-seven million, nine hundred ninety-nine thousand, eight hundred ninety-two".