4944942557 has 4 divisors (see below), whose sum is σ = 4948524636. Its totient is φ = 4941360480.

The previous prime is 4944942503. The next prime is 4944942577. The reversal of 4944942557 is 7552494494.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1854249721 + 3090692836 = 43061^2 + 55594^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4944942557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4944942499 and 4944942508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4944942577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1788968 + ... + 1791729.

It is an arithmetic number, because the mean of its divisors is an integer number (1237131159).

Almost surely, 2^4944942557 is an apocalyptic number.

It is an amenable number.

4944942557 is a deficient number, since it is larger than the sum of its proper divisors (3582079).

4944942557 is a wasteful number, since it uses less digits than its factorization.

4944942557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3582078.

The product of its digits is 7257600, while the sum is 53.

The square root of 4944942557 is about 70320.2855298526. The cubic root of 4944942557 is about 1703.6763067628.

The spelling of 4944942557 in words is "four billion, nine hundred forty-four million, nine hundred forty-two thousand, five hundred fifty-seven".