3717729 has 6 divisors (see below), whose sum is σ = 5370066. Its totient is φ = 2478480.

The previous prime is 3717689. The next prime is 3717731. The reversal of 3717729 is 9277173.

3717729 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., 3686400 + 31329 = 1920^2 + 177^2 .

It is not a de Polignac number, because 3717729 - 2⁷ = 3717601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3717693 and 3717702.

It is not an unprimeable number, because it can be changed into a prime (3717739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 206532 + ... + 206549.

It is an arithmetic number, because the mean of its divisors is an integer number (895011).

Almost surely, 2^3717729 is an apocalyptic number.

It is an amenable number.

3717729 is a deficient number, since it is larger than the sum of its proper divisors (1652337).

3717729 is a wasteful number, since it uses less digits than its factorization.

3717729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413087 (or 413084 counting only the distinct ones).

The product of its digits is 18522, while the sum is 36.

The square root of 3717729 is about 1928.1413329940. The cubic root of 3717729 is about 154.9146807591.

It can be divided in two parts, 371 and 7729, that added together give a square (8100 = 90²).

The spelling of 3717729 in words is "three million, seven hundred seventeen thousand, seven hundred twenty-nine".