7444545397 has 2 divisors, whose sum is σ = 7444545398. Its totient is φ = 7444545396.

The previous prime is 7444545391. The next prime is 7444545403. The reversal of 7444545397 is 7935454447.

It is a happy number.

7444545397 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (7444545391) and next prime (7444545403).

It can be written as a sum of positive squares in only one way, i.e., 7436302756 + 8242641 = 86234^2 + 2871^2 .

It is an emirp because it is prime and its reverse (7935454447) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7444545397 - 2³ = 7444545389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7444545391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3722272698 + 3722272699.

It is an arithmetic number, because the mean of its divisors is an integer number (3722272699).

Almost surely, 2^7444545397 is an apocalyptic number.

It is an amenable number.

7444545397 is a deficient number, since it is larger than the sum of its proper divisors (1).

7444545397 is an equidigital number, since it uses as much as digits as its factorization.

7444545397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8467200, while the sum is 52.

The square root of 7444545397 is about 86281.7790556036. The cubic root of 7444545397 is about 1952.5974937260.

The spelling of 7444545397 in words is "seven billion, four hundred forty-four million, five hundred forty-five thousand, three hundred ninety-seven".