4744744821 has 12 divisors (see below), whose sum is σ = 6916398060. Its totient is φ = 3134142720.

The previous prime is 4744744793. The next prime is 4744744843. The reversal of 4744744821 is 1284474474.

It can be written as a sum of positive squares in 2 ways, for example, as 3076920900 + 1667823921 = 55470^2 + 40839^2 .

It is not a de Polignac number, because 4744744821 - 2⁵ = 4744744789 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4744740821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2417340 + ... + 2419301.

It is an arithmetic number, because the mean of its divisors is an integer number (576366505).

Almost surely, 2^4744744821 is an apocalyptic number.

It is an amenable number.

4744744821 is a deficient number, since it is larger than the sum of its proper divisors (2171653239).

4744744821 is a wasteful number, since it uses less digits than its factorization.

4744744821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4836756 (or 4836753 counting only the distinct ones).

The product of its digits is 802816, while the sum is 45.

The square root of 4744744821 is about 68882.1081341156. The cubic root of 4744744821 is about 1680.3675524462.

The spelling of 4744744821 in words is "four billion, seven hundred forty-four million, seven hundred forty-four thousand, eight hundred twenty-one".