3997747 has 8 divisors (see below), whose sum is σ = 4331600. Its totient is φ = 3667680.

The previous prime is 3997723. The next prime is 3997751. The reversal of 3997747 is 7477993.

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 3997747 - 2¹¹ = 3995699 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3997697 and 3997706.

It is not an unprimeable number, because it can be changed into a prime (3997547) 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, 1504 + ... + 3202.

It is an arithmetic number, because the mean of its divisors is an integer number (541450).

Almost surely, 2^3997747 is an apocalyptic number.

3997747 is a deficient number, since it is larger than the sum of its proper divisors (333853).

3997747 is a wasteful number, since it uses less digits than its factorization.

3997747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1893.

The product of its digits is 333396, while the sum is 46.

The square root of 3997747 is about 1999.4366706650. The cubic root of 3997747 is about 158.7102961447.

The spelling of 3997747 in words is "three million, nine hundred ninety-seven thousand, seven hundred forty-seven".