4391464864 has 12 divisors (see below), whose sum is σ = 8645696514. Its totient is φ = 2195732416.

The previous prime is 4391464829. The next prime is 4391464901. The reversal of 4391464864 is 4684641934.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3353336464 + 1038128400 = 57908^2 + 32220^2 .

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 as a sum of consecutive naturals, namely, 68616607 + ... + 68616670.

Almost surely, 2^4391464864 is an apocalyptic number.

It is an amenable number.

4391464864 is a deficient number, since it is larger than the sum of its proper divisors (4254231650).

4391464864 is a wasteful number, since it uses less digits than its factorization.

4391464864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137233287 (or 137233279 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 49.

The square root of 4391464864 is about 66268.1285687170. The cubic root of 4391464864 is about 1637.5823071035.

The spelling of 4391464864 in words is "four billion, three hundred ninety-one million, four hundred sixty-four thousand, eight hundred sixty-four".