3994929 has 6 divisors (see below), whose sum is σ = 5770466. Its totient is φ = 2663280.

The previous prime is 3994909. The next prime is 3994931. The reversal of 3994929 is 9294993.

It can be written as a sum of positive squares in only one way, i.e., 3920400 + 74529 = 1980^2 + 273^2 .

It is not a de Polignac number, because 3994929 - 2⁵ = 3994897 is a prime.

It is a Duffinian 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 5 ways as a sum of consecutive naturals, for example, 221932 + ... + 221949.

Almost surely, 2^3994929 is an apocalyptic number.

It is an amenable number.

3994929 is a deficient number, since it is larger than the sum of its proper divisors (1775537).

3994929 is a wasteful number, since it uses less digits than its factorization.

3994929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443887 (or 443884 counting only the distinct ones).

The product of its digits is 157464, while the sum is 45.

The square root of 3994929 is about 1998.7318479476. The cubic root of 3994929 is about 158.6729959068.

The spelling of 3994929 in words is "three million, nine hundred ninety-four thousand, nine hundred twenty-nine".