3993331 has 4 divisors (see below), whose sum is σ = 4022200. Its totient is φ = 3964464.

The previous prime is 3993323. The next prime is 3993343. The reversal of 3993331 is 1333993.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3993331 - 2³ = 3993323 is a prime.

It is a super-2 number, since 2×3993331² = 31893384951122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3993293 and 3993302.

It is not an unprimeable number, because it can be changed into a prime (3993631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14226 + ... + 14503.

It is an arithmetic number, because the mean of its divisors is an integer number (1005550).

Almost surely, 2^3993331 is an apocalyptic number.

3993331 is a deficient number, since it is larger than the sum of its proper divisors (28869).

3993331 is a wasteful number, since it uses less digits than its factorization.

3993331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28868.

The product of its digits is 6561, while the sum is 31.

The square root of 3993331 is about 1998.3320544894. The cubic root of 3993331 is about 158.6518363097.

The spelling of 3993331 in words is "three million, nine hundred ninety-three thousand, three hundred thirty-one".