743540399 has 8 divisors (see below), whose sum is σ = 851509248. Its totient is φ = 636008760.

The previous prime is 743540393. The next prime is 743540431. The reversal of 743540399 is 993045347.

743540399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 743540399 - 2²⁸ = 475104943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (743540393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105647 + ... + 112464.

It is an arithmetic number, because the mean of its divisors is an integer number (106438656).

Almost surely, 2^743540399 is an apocalyptic number.

743540399 is a deficient number, since it is larger than the sum of its proper divisors (107968849).

743540399 is a wasteful number, since it uses less digits than its factorization.

743540399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218605.

The product of its (nonzero) digits is 408240, while the sum is 44.

The square root of 743540399 is about 27267.9371973752. The cubic root of 743540399 is about 905.9443553419.

The spelling of 743540399 in words is "seven hundred forty-three million, five hundred forty thousand, three hundred ninety-nine".