3990849 has 8 divisors (see below), whose sum is σ = 5381280. Its totient is φ = 2630496.

The previous prime is 3990841. The next prime is 3990851. The reversal of 3990849 is 9480993.

3990849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3990849 - 2³ = 3990841 is a prime.

3990849 is a lucky number.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 3990849.

It is not an unprimeable number, because it can be changed into a prime (3990841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7207 + ... + 7740.

It is an arithmetic number, because the mean of its divisors is an integer number (672660).

Almost surely, 2^3990849 is an apocalyptic number.

It is an amenable number.

3990849 is a deficient number, since it is larger than the sum of its proper divisors (1390431).

3990849 is a wasteful number, since it uses less digits than its factorization.

3990849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15039.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 3990849 is about 1997.7109400511. The cubic root of 3990849 is about 158.6189602081.

The spelling of 3990849 in words is "three million, nine hundred ninety thousand, eight hundred forty-nine".