1444978973 has 2 divisors, whose sum is σ = 1444978974. Its totient is φ = 1444978972.

The previous prime is 1444978963. The next prime is 1444978987. The reversal of 1444978973 is 3798794441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1333929529 + 111049444 = 36523^2 + 10538^2 .

It is a cyclic number.

It is not a de Polignac number, because 1444978973 - 2¹⁸ = 1444716829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1444978963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722489486 + 722489487.

It is an arithmetic number, because the mean of its divisors is an integer number (722489487).

Almost surely, 2^1444978973 is an apocalyptic number.

It is an amenable number.

1444978973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444978973 is an equidigital number, since it uses as much as digits as its factorization.

1444978973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 56.

The square root of 1444978973 is about 38012.8790411881. The cubic root of 1444978973 is about 1130.5432355533.

The spelling of 1444978973 in words is "one billion, four hundred forty-four million, nine hundred seventy-eight thousand, nine hundred seventy-three".