3994949 has 16 divisors (see below), whose sum is σ = 4924800. Its totient is φ = 3162624.

The previous prime is 3994937. The next prime is 3994961. The reversal of 3994949 is 9494993.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3994937) and next prime (3994961).

It is a cyclic number.

It is not a de Polignac number, because 3994949 - 2⁴ = 3994933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3994909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6737 + ... + 7305.

It is an arithmetic number, because the mean of its divisors is an integer number (307800).

Almost surely, 2^3994949 is an apocalyptic number.

It is an amenable number.

3994949 is a deficient number, since it is larger than the sum of its proper divisors (929851).

3994949 is a wasteful number, since it uses less digits than its factorization.

3994949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652.

The product of its digits is 314928, while the sum is 47.

The square root of 3994949 is about 1998.7368511137. The cubic root of 3994949 is about 158.6732606970.

The spelling of 3994949 in words is "three million, nine hundred ninety-four thousand, nine hundred forty-nine".