3994024 has 8 divisors (see below), whose sum is σ = 7488810. Its totient is φ = 1997008.

The previous prime is 3994021. The next prime is 3994069. The reversal of 3994024 is 4204993.

It can be written as a sum of positive squares in only one way, i.e., 3305124 + 688900 = 1818^2 + 830^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (3994021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249619 + ... + 249634.

Almost surely, 2^3994024 is an apocalyptic number.

It is an amenable number.

3994024 is a deficient number, since it is larger than the sum of its proper divisors (3494786).

3994024 is a wasteful number, since it uses less digits than its factorization.

3994024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499259 (or 499255 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 3994024 is about 1998.5054415738. The cubic root of 3994024 is about 158.6610132235.

Subtracting from 3994024 its sum of digits (31), we obtain a palindrome (3993993).

The spelling of 3994024 in words is "three million, nine hundred ninety-four thousand, twenty-four".