3997533 has 16 divisors (see below), whose sum is σ = 5705856. Its totient is φ = 2480640.

The previous prime is 3997507. The next prime is 3997547. The reversal of 3997533 is 3357993.

It is a happy number.

It is not a de Polignac number, because 3997533 - 2¹⁶ = 3931997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3997491 and 3997500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3997583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4873 + ... + 5633.

It is an arithmetic number, because the mean of its divisors is an integer number (356616).

Almost surely, 2^3997533 is an apocalyptic number.

It is an amenable number.

3997533 is a deficient number, since it is larger than the sum of its proper divisors (1708323).

3997533 is a wasteful number, since it uses less digits than its factorization.

3997533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884.

The product of its digits is 76545, while the sum is 39.

The square root of 3997533 is about 1999.3831548755. The cubic root of 3997533 is about 158.7074641655.

The spelling of 3997533 in words is "three million, nine hundred ninety-seven thousand, five hundred thirty-three".