744216397 has 2 divisors, whose sum is σ = 744216398. Its totient is φ = 744216396.

The previous prime is 744216367. The next prime is 744216401. The reversal of 744216397 is 793612447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 553472676 + 190743721 = 23526^2 + 13811^2 .

It is a cyclic number.

It is not a de Polignac number, because 744216397 - 2⁷ = 744216269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (744216367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372108198 + 372108199.

It is an arithmetic number, because the mean of its divisors is an integer number (372108199).

Almost surely, 2^744216397 is an apocalyptic number.

It is an amenable number.

744216397 is a deficient number, since it is larger than the sum of its proper divisors (1).

744216397 is an equidigital number, since it uses as much as digits as its factorization.

744216397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 43.

The square root of 744216397 is about 27280.3298550439. The cubic root of 744216397 is about 906.2188219666.

The spelling of 744216397 in words is "seven hundred forty-four million, two hundred sixteen thousand, three hundred ninety-seven".