4444555557 has 8 divisors (see below), whose sum is σ = 6381925984. Its totient is φ = 2735111088.

The previous prime is 4444555553. The next prime is 4444555559. The reversal of 4444555557 is 7555554444.

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

It is not a de Polignac number, because 4444555557 - 2² = 4444555553 is a prime.

It is the 66668-th Hogben number.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4444555553) by changing a digit.

It is a nontrivial repunit in base 66667.

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 7 ways as a sum of consecutive naturals, for example, 56981443 + ... + 56981520.

It is an arithmetic number, because the mean of its divisors is an integer number (797740748).

Almost surely, 2^4444555557 is an apocalyptic number.

It is an amenable number.

4444555557 is a deficient number, since it is larger than the sum of its proper divisors (1937370427).

4444555557 is a wasteful number, since it uses less digits than its factorization.

4444555557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113962979.

The product of its digits is 5600000, while the sum is 48.

The square root of 4444555557 is about 66667.5000056249. The cubic root of 4444555557 is about 1644.1550841291.

The spelling of 4444555557 in words is "four billion, four hundred forty-four million, five hundred fifty-five thousand, five hundred fifty-seven".