3993237 has 24 divisors (see below), whose sum is σ = 6110208. Its totient is φ = 2508000.

The previous prime is 3993233. The next prime is 3993239. The reversal of 3993237 is 7323993.

It is not a de Polignac number, because 3993237 - 2² = 3993233 is a prime.

3993237 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3993233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20812 + ... + 21002.

It is an arithmetic number, because the mean of its divisors is an integer number (254592).

Almost surely, 2^3993237 is an apocalyptic number.

It is an amenable number.

3993237 is a deficient number, since it is larger than the sum of its proper divisors (2116971).

3993237 is a wasteful number, since it uses less digits than its factorization.

3993237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 318 counting only the distinct ones).

The product of its digits is 30618, while the sum is 36.

The square root of 3993237 is about 1998.3085347363. The cubic root of 3993237 is about 158.6505914518.

The spelling of 3993237 in words is "three million, nine hundred ninety-three thousand, two hundred thirty-seven".