3994749 has 12 divisors (see below), whose sum is σ = 6294912. Its totient is φ = 2421000.

The previous prime is 3994747. The next prime is 3994759. The reversal of 3994749 is 9474993.

It is not a de Polignac number, because 3994749 - 2¹ = 3994747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3994747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20077 + ... + 20274.

It is an arithmetic number, because the mean of its divisors is an integer number (524576).

Almost surely, 2^3994749 is an apocalyptic number.

It is an amenable number.

3994749 is a deficient number, since it is larger than the sum of its proper divisors (2300163).

3994749 is a wasteful number, since it uses less digits than its factorization.

3994749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40368 (or 40365 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 3994749 is about 1998.6868188888. The cubic root of 3994749 is about 158.6706127548.

The spelling of 3994749 in words is "three million, nine hundred ninety-four thousand, seven hundred forty-nine".