744225397 has 2 divisors, whose sum is σ = 744225398. Its totient is φ = 744225396.

The previous prime is 744225319. The next prime is 744225431. The reversal of 744225397 is 793522447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 688065361 + 56160036 = 26231^2 + 7494^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-744225397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (744285397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372112698 + 372112699.

It is an arithmetic number, because the mean of its divisors is an integer number (372112699).

Almost surely, 2^744225397 is an apocalyptic number.

It is an amenable number.

744225397 is a deficient number, since it is larger than the sum of its proper divisors (1).

744225397 is an equidigital number, since it uses as much as digits as its factorization.

744225397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 43.

The square root of 744225397 is about 27280.4948085624. The cubic root of 744225397 is about 906.2224749975. Note that the first 3 decimals are identical.

The spelling of 744225397 in words is "seven hundred forty-four million, two hundred twenty-five thousand, three hundred ninety-seven".