743343749 has 2 divisors, whose sum is σ = 743343750. Its totient is φ = 743343748.

The previous prime is 743343737. The next prime is 743343781. The reversal of 743343749 is 947343347.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 704530849 + 38812900 = 26543^2 + 6230^2 .

It is a cyclic number.

It is not a de Polignac number, because 743343749 - 2²⁸ = 474908293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (743346749) 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, 371671874 + 371671875.

It is an arithmetic number, because the mean of its divisors is an integer number (371671875).

Almost surely, 2^743343749 is an apocalyptic number.

It is an amenable number.

743343749 is a deficient number, since it is larger than the sum of its proper divisors (1).

743343749 is an equidigital number, since it uses as much as digits as its factorization.

743343749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 44.

The square root of 743343749 is about 27264.3310756013. The cubic root of 743343749 is about 905.8644808810.

The spelling of 743343749 in words is "seven hundred forty-three million, three hundred forty-three thousand, seven hundred forty-nine".