3744727729 has 4 divisors (see below), whose sum is σ = 3745126260. Its totient is φ = 3744329200.

The previous prime is 3744727711. The next prime is 3744727757. The reversal of 3744727729 is 9277274473.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2487316129 + 1257411600 = 49873^2 + 35460^2 .

It is a cyclic number.

It is not a de Polignac number, because 3744727729 - 2⁵ = 3744727697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3744727229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184822 + ... + 204079.

It is an arithmetic number, because the mean of its divisors is an integer number (936281565).

Almost surely, 2^3744727729 is an apocalyptic number.

It is an amenable number.

3744727729 is a deficient number, since it is larger than the sum of its proper divisors (398531).

3744727729 is an equidigital number, since it uses as much as digits as its factorization.

3744727729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398530.

The product of its digits is 4148928, while the sum is 52.

The square root of 3744727729 is about 61194.1805157974. The cubic root of 3744727729 is about 1552.8878149646.

The spelling of 3744727729 in words is "three billion, seven hundred forty-four million, seven hundred twenty-seven thousand, seven hundred twenty-nine".