3994899 has 4 divisors (see below), whose sum is σ = 5326536. Its totient is φ = 2663264.

The previous prime is 3994897. The next prime is 3994909. The reversal of 3994899 is 9984993.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3994899 - 2¹ = 3994897 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (3994891) 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 3 ways as a sum of consecutive naturals, for example, 665814 + ... + 665819.

It is an arithmetic number, because the mean of its divisors is an integer number (1331634).

Almost surely, 2^3994899 is an apocalyptic number.

3994899 is a deficient number, since it is larger than the sum of its proper divisors (1331637).

3994899 is a wasteful number, since it uses less digits than its factorization.

3994899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331636.

The product of its digits is 629856, while the sum is 51.

The square root of 3994899 is about 1998.7243431749. The cubic root of 3994899 is about 158.6725987198.

The spelling of 3994899 in words is "three million, nine hundred ninety-four thousand, eight hundred ninety-nine".