2439721064 has 48 divisors (see below), whose sum is σ = 5034996960. Its totient is φ = 1107453600.

The previous prime is 2439721027. The next prime is 2439721091. The reversal of 2439721064 is 4601279342.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1027799 + ... + 1030169.

It is an arithmetic number, because the mean of its divisors is an integer number (104895770).

Almost surely, 2^2439721064 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 2439721064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2517498480).

2439721064 is an abundant number, since it is smaller than the sum of its proper divisors (2595275896).

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

2439721064 is a wasteful number, since it uses less digits than its factorization.

2439721064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3462 (or 3447 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 2439721064 is about 49393.5326130861. The cubic root of 2439721064 is about 1346.2117967817.

The spelling of 2439721064 in words is "two billion, four hundred thirty-nine million, seven hundred twenty-one thousand, sixty-four".