3994433 has 4 divisors (see below), whose sum is σ = 4168128. Its totient is φ = 3820740.

The previous prime is 3994429. The next prime is 3994453. The reversal of 3994433 is 3344993.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3344993 = 31 ⋅107903.

It is a cyclic number.

It is not a de Polignac number, because 3994433 - 2² = 3994429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3994393 and 3994402.

It is not an unprimeable number, because it can be changed into a prime (3994453) 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, 86813 + ... + 86858.

It is an arithmetic number, because the mean of its divisors is an integer number (1042032).

Almost surely, 2^3994433 is an apocalyptic number.

It is an amenable number.

3994433 is a deficient number, since it is larger than the sum of its proper divisors (173695).

3994433 is a wasteful number, since it uses less digits than its factorization.

3994433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173694.

The product of its digits is 34992, while the sum is 35.

The square root of 3994433 is about 1998.6077654207. The cubic root of 3994433 is about 158.6664288261. Note that the first 3 decimals are identical.

The spelling of 3994433 in words is "three million, nine hundred ninety-four thousand, four hundred thirty-three".