4449777856 has 28 divisors (see below), whose sum is σ = 8929253160. Its totient is φ = 2199887360.

The previous prime is 4449777841. The next prime is 4449777883. The reversal of 4449777856 is 6587779444.

It is a junction number, because it is equal to n+sod(n) for n = 4449777794 and 4449777803.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384910 + ... + 396301.

Almost surely, 2^4449777856 is an apocalyptic number.

It is an amenable number.

4449777856 is an abundant number, since it is smaller than the sum of its proper divisors (4479475304).

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

4449777856 is an equidigital number, since it uses as much as digits as its factorization.

4449777856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781312 (or 781302 counting only the distinct ones).

The product of its digits is 47416320, while the sum is 61.

The square root of 4449777856 is about 66706.6552601763. The cubic root of 4449777856 is about 1644.7987861907.

The spelling of 4449777856 in words is "four billion, four hundred forty-nine million, seven hundred seventy-seven thousand, eight hundred fifty-six".