3997736 has 8 divisors (see below), whose sum is σ = 7495770. Its totient is φ = 1998864.

The previous prime is 3997723. The next prime is 3997751. The reversal of 3997736 is 6377993.

It can be written as a sum of positive squares in only one way, i.e., 3960100 + 37636 = 1990^2 + 194^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249851 + ... + 249866.

Almost surely, 2^3997736 is an apocalyptic number.

It is an amenable number.

3997736 is a deficient number, since it is larger than the sum of its proper divisors (3498034).

3997736 is a wasteful number, since it uses less digits than its factorization.

3997736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499723 (or 499719 counting only the distinct ones).

The product of its digits is 214326, while the sum is 44.

The square root of 3997736 is about 1999.4339198883. The cubic root of 3997736 is about 158.7101505782.

The spelling of 3997736 in words is "three million, nine hundred ninety-seven thousand, seven hundred thirty-six".