3997743 has 8 divisors (see below), whose sum is σ = 5339568. Its totient is φ = 2660544.

The previous prime is 3997723. The next prime is 3997751. The reversal of 3997743 is 3477993.

3997743 is nontrivially palindromic in base 2.

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

It is not a de Polignac number, because 3997743 - 2¹⁶ = 3932207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3997695 and 3997704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3997723) 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, 2755 + ... + 3947.

It is an arithmetic number, because the mean of its divisors is an integer number (667446).

Almost surely, 2^3997743 is an apocalyptic number.

3997743 is a deficient number, since it is larger than the sum of its proper divisors (1341825).

3997743 is a wasteful number, since it uses less digits than its factorization.

3997743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313.

The product of its digits is 142884, while the sum is 42.

The square root of 3997743 is about 1999.4356703830. The cubic root of 3997743 is about 158.7102432115.

The spelling of 3997743 in words is "three million, nine hundred ninety-seven thousand, seven hundred forty-three".