743987169 has 6 divisors (see below), whose sum is σ = 1074648146. Its totient is φ = 495991440.

The previous prime is 743987137. The next prime is 743987173. The reversal of 743987169 is 961789347.

It is a happy number.

743987169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 458816400 + 285170769 = 21420^2 + 16887^2 .

It is not a de Polignac number, because 743987169 - 2⁵ = 743987137 is a prime.

It is a super-2 number, since 2×743987169² = 1107033815273269122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (743987369) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41332612 + ... + 41332629.

Almost surely, 2^743987169 is an apocalyptic number.

It is an amenable number.

743987169 is a deficient number, since it is larger than the sum of its proper divisors (330660977).

743987169 is a wasteful number, since it uses less digits than its factorization.

743987169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82665247 (or 82665244 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 743987169 is about 27276.1281893160. The cubic root of 743987169 is about 906.1257701515.

The spelling of 743987169 in words is "seven hundred forty-three million, nine hundred eighty-seven thousand, one hundred sixty-nine".