743987369 has 2 divisors, whose sum is σ = 743987370. Its totient is φ = 743987368.

The previous prime is 743987357. The next prime is 743987429. The reversal of 743987369 is 963789347.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 623251225 + 120736144 = 24965^2 + 10988^2 .

It is a cyclic number.

It is not a de Polignac number, because 743987369 - 2²⁰ = 742938793 is a prime.

It is a super-2 number, since 2×743987369² = 1107034410463084322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (743987339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371993684 + 371993685.

It is an arithmetic number, because the mean of its divisors is an integer number (371993685).

Almost surely, 2^743987369 is an apocalyptic number.

It is an amenable number.

743987369 is a deficient number, since it is larger than the sum of its proper divisors (1).

743987369 is an equidigital number, since it uses as much as digits as its factorization.

743987369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6858432, while the sum is 56.

The square root of 743987369 is about 27276.1318555253. The cubic root of 743987369 is about 906.1258513470.

The spelling of 743987369 in words is "seven hundred forty-three million, nine hundred eighty-seven thousand, three hundred sixty-nine".