3990249 has 8 divisors (see below), whose sum is σ = 5911520. Its totient is φ = 2660148.

The previous prime is 3990241. The next prime is 3990251. The reversal of 3990249 is 9420993.

It is not a de Polignac number, because 3990249 - 2³ = 3990241 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3990241) 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 7 ways as a sum of consecutive naturals, for example, 73867 + ... + 73920.

It is an arithmetic number, because the mean of its divisors is an integer number (738940).

Almost surely, 2^3990249 is an apocalyptic number.

It is an amenable number.

3990249 is a deficient number, since it is larger than the sum of its proper divisors (1921271).

3990249 is a wasteful number, since it uses less digits than its factorization.

3990249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147796 (or 147790 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 3990249 is about 1997.5607625301. The cubic root of 3990249 is about 158.6110106761.

The spelling of 3990249 in words is "three million, nine hundred ninety thousand, two hundred forty-nine".