4499978771 has 4 divisors (see below), whose sum is σ = 4520158272. Its totient is φ = 4479799272.

The previous prime is 4499978711. The next prime is 4499978783. The reversal of 4499978771 is 1778799944.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4499978771 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4499978698 and 4499978707.

It is not an unprimeable number, because it can be changed into a prime (4499978711) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10089416 + ... + 10089861.

It is an arithmetic number, because the mean of its divisors is an integer number (1130039568).

Almost surely, 2^4499978771 is an apocalyptic number.

4499978771 is a deficient number, since it is larger than the sum of its proper divisors (20179501).

4499978771 is a wasteful number, since it uses less digits than its factorization.

4499978771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20179500.

The product of its digits is 32006016, while the sum is 65.

The square root of 4499978771 is about 67081.8810931834. The cubic root of 4499978771 is about 1650.9610282724.

The spelling of 4499978771 in words is "four billion, four hundred ninety-nine million, nine hundred seventy-eight thousand, seven hundred seventy-one".