4494055721 has 8 divisors (see below), whose sum is σ = 4732474560. Its totient is φ = 4259222352.

The previous prime is 4494055717. The next prime is 4494055751. The reversal of 4494055721 is 1275504944.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4494055721 - 2² = 4494055717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4494055751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 893795 + ... + 898808.

It is an arithmetic number, because the mean of its divisors is an integer number (591559320).

Almost surely, 2^4494055721 is an apocalyptic number.

It is an amenable number.

4494055721 is a deficient number, since it is larger than the sum of its proper divisors (238418839).

4494055721 is a wasteful number, since it uses less digits than its factorization.

4494055721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792735.

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 4494055721 is about 67037.7186440589. The cubic root of 4494055721 is about 1650.2363568359.

The spelling of 4494055721 in words is "four billion, four hundred ninety-four million, fifty-five thousand, seven hundred twenty-one".