743640799 has 4 divisors (see below), whose sum is σ = 811244520. Its totient is φ = 676037080.

The previous prime is 743640787. The next prime is 743640817. The reversal of 743640799 is 997046347.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 743640799 - 2⁷ = 743640671 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 (743640769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33801844 + ... + 33801865.

It is an arithmetic number, because the mean of its divisors is an integer number (202811130).

Almost surely, 2^743640799 is an apocalyptic number.

743640799 is a deficient number, since it is larger than the sum of its proper divisors (67603721).

743640799 is a wasteful number, since it uses less digits than its factorization.

743640799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67603720.

The product of its (nonzero) digits is 1143072, while the sum is 49.

The square root of 743640799 is about 27269.7781252433. The cubic root of 743640799 is about 905.9851299565.

The spelling of 743640799 in words is "seven hundred forty-three million, six hundred forty thousand, seven hundred ninety-nine".