3927449664 has 42 divisors (see below), whose sum is σ = 11257326990. Its totient is φ = 1309149696.

The previous prime is 3927449657. The next prime is 3927449683. The reversal of 3927449664 is 4669447293.

3927449664 is a `hidden beast` number, since 3 + 92 + 7 + 4 + 496 + 64 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3086913600 + 840536064 = 55560^2 + 28992^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3927449664.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3408669 + ... + 3409820.

It is an arithmetic number, because the mean of its divisors is an integer number (268031595).

Almost surely, 2^3927449664 is an apocalyptic number.

It is an amenable number.

3927449664 is an abundant number, since it is smaller than the sum of its proper divisors (7329877326).

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

3927449664 is a wasteful number, since it uses less digits than its factorization.

3927449664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6818507 (or 6818494 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 54.

The square root of 3927449664 is about 62669.3678283099. The cubic root of 3927449664 is about 1577.7452301132.

The spelling of 3927449664 in words is "three billion, nine hundred twenty-seven million, four hundred forty-nine thousand, six hundred sixty-four".