1444797121 has 2 divisors, whose sum is σ = 1444797122. Its totient is φ = 1444797120.

The previous prime is 1444797103. The next prime is 1444797131. The reversal of 1444797121 is 1217974441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1165539600 + 279257521 = 34140^2 + 16711^2 .

It is a cyclic number.

It is not a de Polignac number, because 1444797121 - 2¹⁷ = 1444666049 is a prime.

It is not a weakly prime, because it can be changed into another prime (1444797131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722398560 + 722398561.

It is an arithmetic number, because the mean of its divisors is an integer number (722398561).

Almost surely, 2^1444797121 is an apocalyptic number.

It is an amenable number.

1444797121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444797121 is an equidigital number, since it uses as much as digits as its factorization.

1444797121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 40.

The square root of 1444797121 is about 38010.4869871461. The cubic root of 1444797121 is about 1130.4958069108.

The spelling of 1444797121 in words is "one billion, four hundred forty-four million, seven hundred ninety-seven thousand, one hundred twenty-one".