7444444409 has 2 divisors, whose sum is σ = 7444444410. Its totient is φ = 7444444408.

The previous prime is 7444444373. The next prime is 7444444421. The reversal of 7444444409 is 9044444447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6653991184 + 790453225 = 81572^2 + 28115^2 .

It is a cyclic number.

It is not a de Polignac number, because 7444444409 - 2²⁴ = 7427667193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7444444409.

It is not a weakly prime, because it can be changed into another prime (7444444489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3722222204 + 3722222205.

It is an arithmetic number, because the mean of its divisors is an integer number (3722222205).

Almost surely, 2^7444444409 is an apocalyptic number.

It is an amenable number.

7444444409 is a deficient number, since it is larger than the sum of its proper divisors (1).

7444444409 is an equidigital number, since it uses as much as digits as its factorization.

7444444409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1032192, while the sum is 44.

The square root of 7444444409 is about 86281.1938315645. The cubic root of 7444444409 is about 1952.5886644513.

The spelling of 7444444409 in words is "seven billion, four hundred forty-four million, four hundred forty-four thousand, four hundred nine".