1484444857 has 6 divisors (see below), whose sum is σ = 1726803258. Its totient is φ = 1272381264.

The previous prime is 1484444803. The next prime is 1484444861. The reversal of 1484444857 is 7584444841.

It can be written as a sum of positive squares in only one way, i.e., 1320886336 + 163558521 = 36344^2 + 12789^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1484444857 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 30294793 = 1484444857 / (1 + 4 + 8 + 4 + 4 + 4 + 4 + 8 + 5 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1484444857.

It is not an unprimeable number, because it can be changed into a prime (1484444867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15147348 + ... + 15147445.

It is an arithmetic number, because the mean of its divisors is an integer number (287800543).

Almost surely, 2^1484444857 is an apocalyptic number.

It is an amenable number.

1484444857 is a deficient number, since it is larger than the sum of its proper divisors (242358401).

1484444857 is an equidigital number, since it uses as much as digits as its factorization.

1484444857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30294807 (or 30294800 counting only the distinct ones).

The product of its digits is 2293760, while the sum is 49.

The square root of 1484444857 is about 38528.4940920353. The cubic root of 1484444857 is about 1140.7435533416.

The spelling of 1484444857 in words is "one billion, four hundred eighty-four million, four hundred forty-four thousand, eight hundred fifty-seven".